GET /api/v0/nonlocalizedeventsequence/?format=api&offset=10300&ordering=id
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "count": 11122,
    "next": "https://hermes.lco.global/api/v0/nonlocalizedeventsequence/?format=api&limit=100&offset=10400&ordering=id",
    "previous": "https://hermes.lco.global/api/v0/nonlocalizedeventsequence/?format=api&limit=100&offset=10200&ordering=id",
    "results": [
        {
            "id": 10334,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777586,
                "topic": "igwn.gwalert",
                "uuid": "c6e79ed9-7e97-4ecb-890c-4fe536f004b3",
                "title": "S250910ce - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250910ce/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250910ce/view/"
                    },
                    "event": {
                        "far": 1.1771e-05,
                        "time": "2025-09-10T17:14:08.543Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 1138.9214765515537,
                        "area_90": 3877.5366408755904,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.047742424242424246,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "dd085da11abdf821a5a4cd51698eaa1f",
                        "classification": {
                            "BBH": 0.0027045525064808285,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9972954474935192
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-10T17:15:29Z",
                    "superevent_id": "S250910ce",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-10T17:15:30.527914Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-10T17:15:30.527936Z",
                "modified": "2025-09-10T17:15:30.550250Z"
            }
        },
        {
            "id": 10335,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777587,
                "topic": "igwn.gwalert",
                "uuid": "d86eb31a-a890-46af-8805-27cb04a7b49d",
                "title": "S250910ce - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250910ce/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250910ce/view/"
                    },
                    "event": {
                        "far": 1.1771e-05,
                        "time": "2025-09-10T17:14:08.543Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 1138.9214765515537,
                        "area_90": 3877.5366408755904,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.047742424242424246,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "dd085da11abdf821a5a4cd51698eaa1f",
                        "classification": {
                            "BBH": 0.0027045525064808285,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9972954474935192
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-10T17:20:04Z",
                    "superevent_id": "S250910ce",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-10T17:20:04.707637Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-10T17:20:04.707676Z",
                "modified": "2025-09-10T17:20:04.718202Z"
            }
        },
        {
            "id": 10336,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777613,
                "topic": "igwn.gwalert",
                "uuid": "d0b86449-a945-4962-b62a-f39fe255acb2",
                "title": "S250910co - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250910co/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250910co/view/"
                    },
                    "event": {
                        "far": 1.311931e-05,
                        "time": "2025-09-10T19:24:28.227Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 3650.9273566685765,
                        "area_90": 13693.915115265403,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.04954329004329004,
                            "HasRemnant": 1.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "7d7255ec63ee4c0bf5df80314709e466",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.001082665,
                            "NSBH": 5.6982e-05,
                            "Terrestrial": 0.998860352
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-10T19:25:33Z",
                    "superevent_id": "S250910co",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-10T19:25:34.406831Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-10T19:25:34.406858Z",
                "modified": "2025-09-10T19:25:34.422612Z"
            }
        },
        {
            "id": 10337,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777615,
                "topic": "igwn.gwalert",
                "uuid": "79d665fc-733c-41c4-a2da-7ea112ea0a15",
                "title": "S250910co - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250910co/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250910co/view/"
                    },
                    "event": {
                        "far": 1.311931e-05,
                        "time": "2025-09-10T19:24:28.227Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 3650.9273566685765,
                        "area_90": 13693.915115265403,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.04954329004329004,
                            "HasRemnant": 1.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "7d7255ec63ee4c0bf5df80314709e466",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.001082665,
                            "NSBH": 5.6982e-05,
                            "Terrestrial": 0.998860352
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-10T19:30:15Z",
                    "superevent_id": "S250910co",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-10T19:30:16.650113Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-10T19:30:16.650134Z",
                "modified": "2025-09-10T19:30:16.658604Z"
            }
        },
        {
            "id": 10338,
            "sequence_number": 4,
            "sequence_type": "UPDATE",
            "message": {
                "id": 5777620,
                "topic": "igwn.gwalert",
                "uuid": "1ff07bab-6c7c-4e2a-a2ed-47c0652a6dc3",
                "title": "S250906ca - UPDATE",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250906ca/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250906ca/view/"
                    },
                    "event": {
                        "far": 1.097020577430434e-13,
                        "time": "2025-09-06T12:23:59.099Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 125.36948825341808,
                        "area_90": 516.1655918048677,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.05769115389968402,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": true,
                        "skymap_hash": "0914f0ab4aaa56a38d57592d78fe726d",
                        "classification": {
                            "BBH": 0.9994132149039674,
                            "BNS": 1.2794338669255935e-31,
                            "NSBH": 0.0005864784298535882,
                            "Terrestrial": 3.0666617900632076e-07
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "UPDATE",
                    "sequence_num": 4,
                    "time_created": "2025-09-10T19:51:37Z",
                    "superevent_id": "S250906ca",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-10T19:51:39.202055Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-10T19:51:39.202094Z",
                "modified": "2025-09-10T19:51:39.230631Z"
            }
        },
        {
            "id": 10339,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777631,
                "topic": "igwn.gwalert",
                "uuid": "b843a782-25c6-415e-a788-091c929ab26a",
                "title": "S250910cq - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250910cq/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250910cq/view/"
                    },
                    "event": {
                        "far": 7.165345e-06,
                        "time": "2025-09-10T21:28:05.469Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 4350.058963129479,
                        "area_90": 14120.276287032671,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "8e3ae00b03bb3932263c86bc0df85ef5",
                        "classification": {
                            "BBH": 0.018845334,
                            "BNS": 0.0,
                            "NSBH": 0.008749619,
                            "Terrestrial": 0.972405046
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-10T21:28:58Z",
                    "superevent_id": "S250910cq",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-10T21:28:59.959330Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-10T21:28:59.959349Z",
                "modified": "2025-09-10T21:28:59.972639Z"
            }
        },
        {
            "id": 10340,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777632,
                "topic": "igwn.gwalert",
                "uuid": "614cd79c-dce2-4777-8527-f5c1f4473c43",
                "title": "S250910cq - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250910cq/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250910cq/view/"
                    },
                    "event": {
                        "far": 7.165345e-06,
                        "time": "2025-09-10T21:28:05.469Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 4350.058963129479,
                        "area_90": 14120.276287032671,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "8e3ae00b03bb3932263c86bc0df85ef5",
                        "classification": {
                            "BBH": 0.018845334,
                            "BNS": 0.0,
                            "NSBH": 0.008749619,
                            "Terrestrial": 0.972405046
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-10T21:33:34Z",
                    "superevent_id": "S250910cq",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-10T21:33:35.131724Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-10T21:33:35.131745Z",
                "modified": "2025-09-10T21:33:35.140589Z"
            }
        },
        {
            "id": 10341,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777642,
                "topic": "igwn.gwalert",
                "uuid": "3edcb1c0-e142-44ba-aa39-23ca2de5717a",
                "title": "S250910ct - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250910ct/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250910ct/view/"
                    },
                    "event": {
                        "far": 1.984209e-05,
                        "time": "2025-09-10T22:20:12.667Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 3393.2642075887475,
                        "area_90": 13276.78617359545,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.6471320136015735,
                            "HasRemnant": 0.0002900310013470088
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "df861c56066939ddd3abd88c76169b5b",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.000545803,
                            "NSBH": 0.000227418,
                            "Terrestrial": 0.99922678
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-10T22:21:06Z",
                    "superevent_id": "S250910ct",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-10T22:21:07.612409Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-10T22:21:07.612430Z",
                "modified": "2025-09-10T22:21:07.629107Z"
            }
        },
        {
            "id": 10342,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777643,
                "topic": "igwn.gwalert",
                "uuid": "a2c1965e-f0cd-483c-897b-a68f410fa2b3",
                "title": "S250910ct - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250910ct/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250910ct/view/"
                    },
                    "event": {
                        "far": 1.984209e-05,
                        "time": "2025-09-10T22:20:12.667Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 3393.2642075887475,
                        "area_90": 13276.78617359545,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.6471320136015735,
                            "HasRemnant": 0.0002900310013470088
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "df861c56066939ddd3abd88c76169b5b",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.000545803,
                            "NSBH": 0.000227418,
                            "Terrestrial": 0.99922678
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-10T22:25:41Z",
                    "superevent_id": "S250910ct",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-10T22:25:42.899178Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-10T22:25:42.899218Z",
                "modified": "2025-09-10T22:25:42.910010Z"
            }
        },
        {
            "id": 10343,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777664,
                "topic": "igwn.gwalert",
                "uuid": "5246e065-98e9-46e6-ac32-1184ad17aebe",
                "title": "S250911b - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911b/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911b/view/"
                    },
                    "event": {
                        "far": 1.544264443535152e-05,
                        "time": "2025-09-11T00:04:40.282Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 3373.12116010368,
                        "area_90": 13946.542502473962,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.033169883157011366,
                            "HasMassGap": 0.2943198877968121,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "dce3e4a3f16bfc442c3489aff8c12af4",
                        "classification": {
                            "BBH": 0.0835779246355396,
                            "BNS": 1.5786763613605685e-17,
                            "NSBH": 0.00022862631225066874,
                            "Terrestrial": 0.9161934490522097
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T00:05:05Z",
                    "superevent_id": "S250911b",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T00:05:06.344472Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T00:05:06.344509Z",
                "modified": "2025-09-11T00:05:06.359477Z"
            }
        },
        {
            "id": 10344,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777665,
                "topic": "igwn.gwalert",
                "uuid": "e6a631f5-6c93-42d7-b7be-cf93423f8725",
                "title": "S250911b - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911b/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911b/view/"
                    },
                    "event": {
                        "far": 1.544264443535152e-05,
                        "time": "2025-09-11T00:04:40.281Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 3915.3048549100936,
                        "area_90": 13539.485084546546,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.05464138554850342,
                            "HasMassGap": 0.4261428629457253,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "f926f84c36291243eb7995a20d7a4ae5",
                        "classification": {
                            "BBH": 0.0835779246355396,
                            "BNS": 1.5786763613605685e-17,
                            "NSBH": 0.00022862631225066874,
                            "Terrestrial": 0.9161934490522097
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T00:09:40Z",
                    "superevent_id": "S250911b",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T00:09:40.561724Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T00:09:40.561742Z",
                "modified": "2025-09-11T00:09:40.575495Z"
            }
        },
        {
            "id": 10345,
            "sequence_number": 0,
            "sequence_type": "INITIAL",
            "message": {
                "id": 5777718,
                "topic": "gcn.classic.text.ICECUBE_CASCADE",
                "uuid": "31084690-4af3-47b9-86f2-12bb78f2b992",
                "title": "GCN/AMON NOTICE",
                "submitter": "",
                "authors": "",
                "data": {
                    "far": "0.3110 [yr^-1]",
                    "urls": {
                        "gcn": "https://gcn.gsfc.nasa.gov/notices_amon_icecube_cascade/141344_29341777.amon"
                    },
                    "title": "GCN/AMON NOTICE",
                    "energy": "96.63 [TeV]",
                    "src_ra": "111.9776d {+07h 27m 55s} (J2000),\n112.3027d {+07h 29m 13s} (current),\n111.3448d {+07h 25m 23s} (1950)",
                    "stream": "26",
                    "run_num": "141344",
                    "src_dec": "-1.7676d {-01d 46' 02\"} (J2000),\n-1.8215d {-01d 49' 16\"} (current),\n-1.6648d {-01d 39' 52\"} (1950)",
                    "comments": "IceCube Cascade event.\nThe position error is the combined statistical and the systematic.",
                    "revision": "0",
                    "sun_dist": "57.65 [deg]   Sun_angle= 3.8 [hr] (West of Sun)",
                    "event_num": "29341777",
                    "moon_dist": "81.12 [deg]",
                    "src_error": "13.28 [deg radius, stat+systematic, 90% containment]",
                    "sun_postn": "169.66d {+11h 18m 39s}   +4.45d {+04d 26' 52\"}",
                    "ecl_coords": "114.05,-23.39 [deg] ecliptic lon,lat of the event",
                    "event_name": "IceCubeCascade-250911a",
                    "gal_coords": "218.70,  7.29 [deg] galactic lon,lat of the event",
                    "moon_postn": "32.17d {+02h 08m 40s}  +17.03d {+17d 01' 59\"}",
                    "signalness": "9.0012e-01 [dn]",
                    "notice_date": "Thu 11 Sep 25 05:47:53 UT",
                    "notice_type": "ICECUBE Cascade",
                    "src_error50": "7.28 [deg radius, stat+systematic, 50% containment]",
                    "discovery_date": "20929 TJD;   254 DOY;   25/09/11 (yy/mm/dd)",
                    "discovery_time": "16117 SOD {04:28:37.14} UT",
                    "skymap_png_url": "https://roc.icecube.wisc.edu/public/hese_cascades/hese_60929_run00141344.evt000029341777.png",
                    "skymap_fits_url": "https://roc.icecube.wisc.edu/public/hese_cascades/hese_60929_run00141344.evt000029341777.fits"
                },
                "message_text": "TITLE:            GCN/AMON NOTICE\nNOTICE_DATE:      Thu 11 Sep 25 05:47:53 UT\nNOTICE_TYPE:      ICECUBE Cascade \nEVENT_NAME:       IceCubeCascade-250911a\nSTREAM:           26\nRUN_NUM:          141344\nEVENT_NUM:        29341777\nSRC_RA:           111.9776d {+07h 27m 55s} (J2000),\n                  112.3027d {+07h 29m 13s} (current),\n                  111.3448d {+07h 25m 23s} (1950)\nSRC_DEC:           -1.7676d {-01d 46' 02\"} (J2000),\n                   -1.8215d {-01d 49' 16\"} (current),\n                   -1.6648d {-01d 39' 52\"} (1950)\nSRC_ERROR:        13.28 [deg radius, stat+systematic, 90% containment]\nSRC_ERROR50:      7.28 [deg radius, stat+systematic, 50% containment]\nDISCOVERY_DATE:   20929 TJD;   254 DOY;   25/09/11 (yy/mm/dd)\nDISCOVERY_TIME:   16117 SOD {04:28:37.14} UT\nREVISION:         0\nENERGY:           96.63 [TeV]\nSIGNALNESS:       9.0012e-01 [dn]\nFAR:              0.3110 [yr^-1]\nSUN_POSTN:        169.66d {+11h 18m 39s}   +4.45d {+04d 26' 52\"}\nSUN_DIST:          57.65 [deg]   Sun_angle= 3.8 [hr] (West of Sun)\nMOON_POSTN:        32.17d {+02h 08m 40s}  +17.03d {+17d 01' 59\"}\nMOON_DIST:         81.12 [deg]\nGAL_COORDS:       218.70,  7.29 [deg] galactic lon,lat of the event\nECL_COORDS:       114.05,-23.39 [deg] ecliptic lon,lat of the event\nSKYMAP_FITS_URL:  https://roc.icecube.wisc.edu/public/hese_cascades/hese_60929_run00141344.evt000029341777.fits\nSKYMAP_PNG_URL:   https://roc.icecube.wisc.edu/public/hese_cascades/hese_60929_run00141344.evt000029341777.png\nCOMMENTS:         IceCube Cascade event.  \nCOMMENTS:         The position error is the combined statistical and the systematic.  \n",
                "published": "2025-09-11T05:47:53Z",
                "message_parser": "Icecube Notice Plaintext Parser v1",
                "retracted": false,
                "created": "2025-09-11T05:47:54.938259Z",
                "modified": "2025-09-11T05:47:54.957604Z"
            }
        },
        {
            "id": 10346,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777724,
                "topic": "igwn.gwalert",
                "uuid": "30b49d12-c3ea-4f88-9b48-1fb7d8f10f9c",
                "title": "S250911k - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911k/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911k/view/"
                    },
                    "event": {
                        "far": 9.25265e-06,
                        "time": "2025-09-11T06:27:48.065Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 331.9930925338423,
                        "area_90": 2013.4654548615893,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.03492009538449167,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "f07891ef2553a2aac7a6a77a879f1d0b",
                        "classification": {
                            "BBH": 0.085268396,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.914731604
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T06:28:22Z",
                    "superevent_id": "S250911k",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T06:28:22.982036Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T06:28:22.982070Z",
                "modified": "2025-09-11T06:28:23.013079Z"
            }
        },
        {
            "id": 10347,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777725,
                "topic": "igwn.gwalert",
                "uuid": "ae21d137-8a96-4234-9d84-4111468204c0",
                "title": "S250911k - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911k/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911k/view/"
                    },
                    "event": {
                        "far": 9.25265e-06,
                        "time": "2025-09-11T06:27:48.065Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 331.9930925338423,
                        "area_90": 2013.4654548615893,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.03492009538449167,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "f07891ef2553a2aac7a6a77a879f1d0b",
                        "classification": {
                            "BBH": 0.085268396,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.914731604
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T06:32:56Z",
                    "superevent_id": "S250911k",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T06:32:57.306945Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T06:32:57.306974Z",
                "modified": "2025-09-11T06:32:57.318891Z"
            }
        },
        {
            "id": 10348,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777733,
                "topic": "igwn.gwalert",
                "uuid": "a50a31ce-652b-42e2-a373-8c389781fac0",
                "title": "S250911t - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911t/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911t/view/"
                    },
                    "event": {
                        "far": 7.870222e-06,
                        "time": "2025-09-11T07:16:06.090Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 582.2599663652471,
                        "area_90": 2161.181136418755,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "6f9bde8775cf8c908bdf94c2578895d6",
                        "classification": {
                            "BBH": 0.101648394,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.898351606
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T07:16:48Z",
                    "superevent_id": "S250911t",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T07:16:49.119769Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T07:16:49.119806Z",
                "modified": "2025-09-11T07:16:49.138549Z"
            }
        },
        {
            "id": 10349,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777735,
                "topic": "igwn.gwalert",
                "uuid": "c73436b0-5d70-4364-872f-e511f8d7c71a",
                "title": "S250911t - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911t/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911t/view/"
                    },
                    "event": {
                        "far": 7.870222e-06,
                        "time": "2025-09-11T07:16:06.090Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 10.494449055941194,
                        "area_90": 50.56744212397281,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "6a00eb1477d8c247b00d93238e8514fd",
                        "classification": {
                            "BBH": 0.10164839403218776,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.8983516059678123
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T07:21:23Z",
                    "superevent_id": "S250911t",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T07:21:24.349281Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T07:21:24.349308Z",
                "modified": "2025-09-11T07:21:24.357896Z"
            }
        },
        {
            "id": 10350,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777736,
                "topic": "igwn.gwalert",
                "uuid": "ca309961-ce64-42a5-a982-f3b5518db3b8",
                "title": "S250911w - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911w/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911w/view/"
                    },
                    "event": {
                        "far": 2.17525e-05,
                        "time": "2025-09-11T07:20:16.705Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 167.85872904223342,
                        "area_90": 676.4706780402006,
                        "duration": 0.007743,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "ab17379c30e4525dc08ede8ec4b38609",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 370.307831
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T07:21:36Z",
                    "superevent_id": "S250911w",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T07:21:36.419684Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T07:21:36.419703Z",
                "modified": "2025-09-11T07:21:36.422792Z"
            }
        },
        {
            "id": 10351,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777739,
                "topic": "igwn.gwalert",
                "uuid": "60942608-f693-4339-a9d4-87c3f1926c1e",
                "title": "S250911w - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911w/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911w/view/"
                    },
                    "event": {
                        "far": 2.17525e-05,
                        "time": "2025-09-11T07:20:16.705Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 167.85872904223342,
                        "area_90": 676.4706780402006,
                        "duration": 0.007743,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "ab17379c30e4525dc08ede8ec4b38609",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 370.307831
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T07:26:12Z",
                    "superevent_id": "S250911w",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T07:26:12.600535Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T07:26:12.600554Z",
                "modified": "2025-09-11T07:26:12.607298Z"
            }
        },
        {
            "id": 10352,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777740,
                "topic": "igwn.gwalert",
                "uuid": "2e72a964-e495-47c8-8ee0-6cf83fa1e611",
                "title": "S250911z - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911z/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911z/view/"
                    },
                    "event": {
                        "far": 2.314606525249014e-05,
                        "time": "2025-09-11T07:35:12.072Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 841.8115261468006,
                        "area_90": 3046.635932116536,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "a954525cc31c1922603f5306bbe61618",
                        "classification": {
                            "BBH": 0.0422584063866379,
                            "BNS": 5.054209150539599e-16,
                            "NSBH": 3.853828097807806e-14,
                            "Terrestrial": 0.957741593613323
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T07:35:38Z",
                    "superevent_id": "S250911z",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T07:35:39.831366Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T07:35:39.831400Z",
                "modified": "2025-09-11T07:35:39.841755Z"
            }
        },
        {
            "id": 10353,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777741,
                "topic": "igwn.gwalert",
                "uuid": "e94d2d63-5d0d-4039-8ceb-00b863b15a35",
                "title": "S250911z - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911z/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911z/view/"
                    },
                    "event": {
                        "far": 2.314606525249014e-05,
                        "time": "2025-09-11T07:35:12.059Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 550.7864546698283,
                        "area_90": 1975.6972408270872,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "d4befbf6ab7520675939cf19918908dd",
                        "classification": {
                            "BBH": 0.0422584063866379,
                            "BNS": 5.054209150539599e-16,
                            "NSBH": 3.853828097807806e-14,
                            "Terrestrial": 0.957741593613323
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T07:40:14Z",
                    "superevent_id": "S250911z",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T07:40:15.075800Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T07:40:15.075820Z",
                "modified": "2025-09-11T07:40:15.092122Z"
            }
        },
        {
            "id": 10354,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777743,
                "topic": "igwn.gwalert",
                "uuid": "8f16db7e-b323-473c-9489-fef2ded3268a",
                "title": "S250911ac - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911ac/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ac/view/"
                    },
                    "event": {
                        "far": 1.772091573906547e-14,
                        "time": "2025-09-11T07:46:39.271Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 312.9516179581139,
                        "area_90": 1117.9391354212744,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0755196650709655,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": true,
                        "skymap_hash": "dad3fe742ce4aae5d151ee0b0ce058f2",
                        "classification": {
                            "BBH": 0.9996580525595506,
                            "BNS": 1.029019955395159e-27,
                            "NSBH": 0.00034189621849124035,
                            "Terrestrial": 5.122195811946284e-08
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T07:47:07Z",
                    "superevent_id": "S250911ac",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T07:47:07.741814Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T07:47:07.741837Z",
                "modified": "2025-09-11T07:47:07.761004Z"
            }
        },
        {
            "id": 10355,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777745,
                "topic": "igwn.gwalert",
                "uuid": "09860a09-8fa2-4d8a-8f94-11367706fe4a",
                "title": "S250911ac - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911ac/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ac/view/"
                    },
                    "event": {
                        "far": 6.018337100263316e-09,
                        "time": "2025-09-11T07:46:39.272Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 281.74038552682356,
                        "area_90": 1011.558665890759,
                        "duration": null,
                        "pipeline": "pycbc",
                        "properties": {
                            "HasNS": 6.442032849326718e-05,
                            "HasMassGap": 0.06959291839034507,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": true,
                        "skymap_hash": "048b8161245d749f2cc059d5613c7a7b",
                        "classification": {
                            "BBH": 0.8370138075782837,
                            "BNS": 0.0,
                            "NSBH": 0.12652274120592383,
                            "Terrestrial": 0.03646345121579242
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T07:51:44Z",
                    "superevent_id": "S250911ac",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T07:51:46.082173Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T07:51:46.082195Z",
                "modified": "2025-09-11T07:51:46.094094Z"
            }
        },
        {
            "id": 10356,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777746,
                "topic": "igwn.gwalert",
                "uuid": "88af15bc-3b75-49e9-bf92-f0845feec569",
                "title": "S250911af - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911af/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911af/view/"
                    },
                    "event": {
                        "far": 9.62086e-06,
                        "time": "2025-09-11T07:54:35.949Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 778.864502755963,
                        "area_90": 2306.378937040287,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "addf0882e0d2c4f91f0a752b48bafa06",
                        "classification": {
                            "BBH": 0.0029475648542315325,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9970524351457685
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T07:56:51Z",
                    "superevent_id": "S250911af",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T07:56:52.464920Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T07:56:52.464957Z",
                "modified": "2025-09-11T07:56:52.495516Z"
            }
        },
        {
            "id": 10357,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777748,
                "topic": "igwn.gwalert",
                "uuid": "4ca5b84f-aeed-4744-9e05-47a322e661e1",
                "title": "S250911af - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911af/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911af/view/"
                    },
                    "event": {
                        "far": 9.62086e-06,
                        "time": "2025-09-11T07:54:35.949Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 778.864502755963,
                        "area_90": 2306.378937040287,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "addf0882e0d2c4f91f0a752b48bafa06",
                        "classification": {
                            "BBH": 0.0029475648542315325,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9970524351457685
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T08:01:30Z",
                    "superevent_id": "S250911af",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T08:01:30.721838Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T08:01:30.721859Z",
                "modified": "2025-09-11T08:01:30.731530Z"
            }
        },
        {
            "id": 10358,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777751,
                "topic": "igwn.gwalert",
                "uuid": "0b97d5be-9973-46bc-b170-1542776354fd",
                "title": "S250911am - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911am/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911am/view/"
                    },
                    "event": {
                        "far": 1.00872e-05,
                        "time": "2025-09-11T08:22:45.555Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 750.3285188187833,
                        "area_90": 3112.9401300882187,
                        "duration": 0.007769,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "f17039249ab4dc2d9377bfe481ec6277",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 186.371353
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T08:24:37Z",
                    "superevent_id": "S250911am",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T08:24:38.260677Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T08:24:38.260705Z",
                "modified": "2025-09-11T08:24:38.274422Z"
            }
        },
        {
            "id": 10359,
            "sequence_number": 3,
            "sequence_type": "INITIAL",
            "message": {
                "id": 5777752,
                "topic": "igwn.gwalert",
                "uuid": "7113316f-8ae2-4562-964c-003fdeaeaff1",
                "title": "S250911ac - INITIAL",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911ac/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ac/view/"
                    },
                    "event": {
                        "far": 6.018337100263316e-09,
                        "time": "2025-09-11T07:46:39.272Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 281.74038552682356,
                        "area_90": 1011.558665890759,
                        "duration": null,
                        "pipeline": "pycbc",
                        "properties": {
                            "HasNS": 6.442032849326718e-05,
                            "HasMassGap": 0.06959291839034507,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": true,
                        "skymap_hash": "048b8161245d749f2cc059d5613c7a7b",
                        "classification": {
                            "BBH": 0.8370138075782837,
                            "BNS": 0.0,
                            "NSBH": 0.12652274120592383,
                            "Terrestrial": 0.03646345121579242
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "INITIAL",
                    "sequence_num": 3,
                    "time_created": "2025-09-11T08:26:16Z",
                    "superevent_id": "S250911ac",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T08:26:17.662818Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T08:26:17.662858Z",
                "modified": "2025-09-11T08:26:17.672170Z"
            }
        },
        {
            "id": 10360,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777753,
                "topic": "igwn.gwalert",
                "uuid": "42290163-6a08-478d-9d32-bc78f0b1f775",
                "title": "S250911am - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911am/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911am/view/"
                    },
                    "event": {
                        "far": 1.00872e-05,
                        "time": "2025-09-11T08:22:45.555Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 750.3285188187833,
                        "area_90": 3112.9401300882187,
                        "duration": 0.007769,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "f17039249ab4dc2d9377bfe481ec6277",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 186.371353
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T08:29:11Z",
                    "superevent_id": "S250911am",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T08:29:12.510161Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T08:29:12.510198Z",
                "modified": "2025-09-11T08:29:12.522202Z"
            }
        },
        {
            "id": 10361,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777765,
                "topic": "igwn.gwalert",
                "uuid": "cd249233-7b4d-49a4-9c05-21c6c2bf85ee",
                "title": "S250911ax - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911ax/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ax/view/"
                    },
                    "event": {
                        "far": 5.51614e-06,
                        "time": "2025-09-11T09:05:02.508Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 1730.6234964254263,
                        "area_90": 5969.05640474182,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "77ff7db80b44e4b1611b8ad09fbc80db",
                        "classification": {
                            "BBH": 0.004205919583048945,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.995794080416951
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T09:06:33Z",
                    "superevent_id": "S250911ax",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T09:06:33.825599Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T09:06:33.825627Z",
                "modified": "2025-09-11T09:06:33.836694Z"
            }
        },
        {
            "id": 10362,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777766,
                "topic": "igwn.gwalert",
                "uuid": "01001007-1604-43bb-8eea-1e70525230be",
                "title": "S250911ax - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911ax/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ax/view/"
                    },
                    "event": {
                        "far": 5.51614e-06,
                        "time": "2025-09-11T09:05:02.508Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 1730.6234964254263,
                        "area_90": 5969.05640474182,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "77ff7db80b44e4b1611b8ad09fbc80db",
                        "classification": {
                            "BBH": 0.004205919583048945,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.995794080416951
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T09:11:09Z",
                    "superevent_id": "S250911ax",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T09:11:11.081400Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T09:11:11.081424Z",
                "modified": "2025-09-11T09:11:11.204167Z"
            }
        },
        {
            "id": 10363,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777771,
                "topic": "igwn.gwalert",
                "uuid": "0cfcd1c2-f962-4ca0-9020-cd6e7ee66add",
                "title": "S250911bf - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911bf/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bf/view/"
                    },
                    "event": {
                        "far": 2.12934e-05,
                        "time": "2025-09-11T09:30:06.522Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 88.12583274717254,
                        "area_90": 307.18147414728713,
                        "duration": 0.008643,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "a60cf09546588e9136db1adcfdb36e4e",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 317.309143
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T09:32:37Z",
                    "superevent_id": "S250911bf",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T09:32:38.189457Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T09:32:38.189493Z",
                "modified": "2025-09-11T09:32:38.208016Z"
            }
        },
        {
            "id": 10364,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777772,
                "topic": "igwn.gwalert",
                "uuid": "cbb20467-c1b7-4c26-b54e-485317a8e031",
                "title": "S250911bf - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911bf/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bf/view/"
                    },
                    "event": {
                        "far": 2.12934e-05,
                        "time": "2025-09-11T09:30:06.522Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 88.12583274717254,
                        "area_90": 307.18147414728713,
                        "duration": 0.008643,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "a60cf09546588e9136db1adcfdb36e4e",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 317.309143
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T09:37:10Z",
                    "superevent_id": "S250911bf",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T09:37:11.075365Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T09:37:11.075403Z",
                "modified": "2025-09-11T09:37:11.085512Z"
            }
        },
        {
            "id": 10365,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777774,
                "topic": "igwn.gwalert",
                "uuid": "b1ea418e-3b65-427c-867c-a9092a0dd79d",
                "title": "S250911bl - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911bl/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bl/view/"
                    },
                    "event": {
                        "far": 1.65267e-06,
                        "time": "2025-09-11T09:47:15.969Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 454.89715570445253,
                        "area_90": 1628.229671709664,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.005275362318840579,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "4c5758a926e6b70c468f53f2e6d7584d",
                        "classification": {
                            "BBH": 0.020463569752304234,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9795364302476958
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T09:49:14Z",
                    "superevent_id": "S250911bl",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T09:49:15.294467Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T09:49:15.294489Z",
                "modified": "2025-09-11T09:49:15.317393Z"
            }
        },
        {
            "id": 10366,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777777,
                "topic": "igwn.gwalert",
                "uuid": "f814a868-2d19-4790-a48f-1ef2dee77b2b",
                "title": "S250911bl - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911bl/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bl/view/"
                    },
                    "event": {
                        "far": 1.65267e-06,
                        "time": "2025-09-11T09:47:15.969Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 454.89715570445253,
                        "area_90": 1628.229671709664,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.005275362318840579,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "4c5758a926e6b70c468f53f2e6d7584d",
                        "classification": {
                            "BBH": 0.020463569752304234,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9795364302476958
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T09:53:48Z",
                    "superevent_id": "S250911bl",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T09:53:49.504637Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T09:53:49.504670Z",
                "modified": "2025-09-11T09:53:49.515857Z"
            }
        },
        {
            "id": 10367,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777779,
                "topic": "igwn.gwalert",
                "uuid": "a507e06c-2c88-4fc8-bbde-d5124c7fda81",
                "title": "S250911bo - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911bo/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bo/view/"
                    },
                    "event": {
                        "far": 1.631322e-05,
                        "time": "2025-09-11T10:00:32.583Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 155.0070450999374,
                        "area_90": 880.4190338265141,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0007692307692307692,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "6fd25bb847c7d54509f194d1fe841d4c",
                        "classification": {
                            "BBH": 0.043498671,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.956501329
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T10:01:13Z",
                    "superevent_id": "S250911bo",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:01:15.149191Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:01:15.149211Z",
                "modified": "2025-09-11T10:01:15.161142Z"
            }
        },
        {
            "id": 10368,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777780,
                "topic": "igwn.gwalert",
                "uuid": "97cfcdca-3209-429f-bbc6-c31a5c626164",
                "title": "S250911bo - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911bo/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bo/view/"
                    },
                    "event": {
                        "far": 1.631322e-05,
                        "time": "2025-09-11T10:00:32.583Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 140.73905313134756,
                        "area_90": 985.1209160666072,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.005384615384615384,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "8c33a583808496707d9a438e81f152d3",
                        "classification": {
                            "BBH": 0.0434986713424892,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9565013286575108
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T10:05:52Z",
                    "superevent_id": "S250911bo",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:05:53.505638Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:05:53.505666Z",
                "modified": "2025-09-11T10:05:53.517127Z"
            }
        },
        {
            "id": 10369,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777782,
                "topic": "igwn.gwalert",
                "uuid": "a90a864b-cfcb-4dc2-a562-7598559c5d11",
                "title": "S250911br - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911br/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911br/view/"
                    },
                    "event": {
                        "far": 1.262403e-06,
                        "time": "2025-09-11T10:06:46.031Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 1036.737475247094,
                        "area_90": 5237.192346117682,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.08978706921098226,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "3729b7495805cac6724721246c246356",
                        "classification": {
                            "BBH": 0.533439053,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.466560947
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T10:07:24Z",
                    "superevent_id": "S250911br",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:07:24.952150Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:07:24.952170Z",
                "modified": "2025-09-11T10:07:24.963118Z"
            }
        },
        {
            "id": 10370,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777784,
                "topic": "igwn.gwalert",
                "uuid": "bb8b2cf8-190a-4884-b712-6c919bfa4a77",
                "title": "S250911bt - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911bt/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bt/view/"
                    },
                    "event": {
                        "far": 1.64625e-05,
                        "time": "2025-09-11T10:06:48.164Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 1856.5175432071014,
                        "area_90": 5938.841833514219,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.06705969030969032,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "4d2d096d7c9c573fa24ef6c8def8e4fe",
                        "classification": {
                            "BBH": 0.0010795971173254149,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9989204028826746
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T10:08:49Z",
                    "superevent_id": "S250911bt",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:08:50.450021Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:08:50.450040Z",
                "modified": "2025-09-11T10:08:50.467112Z"
            }
        },
        {
            "id": 10371,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777785,
                "topic": "igwn.gwalert",
                "uuid": "1fbc30bf-a3c8-4c0f-8a39-33380a635bea",
                "title": "S250911bu - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bu/view/"
                    },
                    "event": {
                        "far": 4.1738157149791157e-07,
                        "time": "2025-09-11T10:08:42.346Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 7410.123593569393,
                        "area_90": 22733.10767418967,
                        "duration": 0.25,
                        "pipeline": "MLy",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "baca17713417a0d95ad3c4aec02f4333",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 104.0
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T10:09:25Z",
                    "superevent_id": "S250911bu",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:09:26.613567Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:09:26.613587Z",
                "modified": "2025-09-11T10:09:26.617179Z"
            }
        },
        {
            "id": 10372,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777788,
                "topic": "igwn.gwalert",
                "uuid": "49c8c381-675d-4cca-b192-eae9eb3dc62c",
                "title": "S250911br - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911br/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911br/view/"
                    },
                    "event": {
                        "far": 1.262403e-06,
                        "time": "2025-09-11T10:06:46.031Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 599.8851329146815,
                        "area_90": 2829.258878006844,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0789371964770593,
                            "HasMassGap": 0.06848225836565885,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "7aff605d8093abe1b98db178df8b6758",
                        "classification": {
                            "BBH": 0.5182893840033689,
                            "BNS": 0.0,
                            "NSBH": 0.015149669108373483,
                            "Terrestrial": 0.4665609468882578
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T10:11:59Z",
                    "superevent_id": "S250911br",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:12:00.316592Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:12:00.316611Z",
                "modified": "2025-09-11T10:12:00.334207Z"
            }
        },
        {
            "id": 10373,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777789,
                "topic": "igwn.gwalert",
                "uuid": "37fb3331-37e3-445c-8369-8181ec7135bb",
                "title": "S250911bt - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911bt/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bt/view/"
                    },
                    "event": {
                        "far": 1.64625e-05,
                        "time": "2025-09-11T10:06:48.164Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 1856.5175432071014,
                        "area_90": 5938.841833514219,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.06705969030969032,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "4d2d096d7c9c573fa24ef6c8def8e4fe",
                        "classification": {
                            "BBH": 0.0010795971173254149,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9989204028826746
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T10:13:24Z",
                    "superevent_id": "S250911bt",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:13:24.813398Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:13:24.813434Z",
                "modified": "2025-09-11T10:13:24.825622Z"
            }
        },
        {
            "id": 10374,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777790,
                "topic": "igwn.gwalert",
                "uuid": "85e13597-57d7-4cc2-91d0-784a628920c0",
                "title": "S250911bu - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bu/view/"
                    },
                    "event": {
                        "far": 4.1738157149791157e-07,
                        "time": "2025-09-11T10:08:42.346Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 7410.123593569393,
                        "area_90": 22733.10767418967,
                        "duration": 0.25,
                        "pipeline": "MLy",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "baca17713417a0d95ad3c4aec02f4333",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 104.0
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T10:13:59Z",
                    "superevent_id": "S250911bu",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:14:01.000675Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:14:01.000712Z",
                "modified": "2025-09-11T10:14:01.012896Z"
            }
        },
        {
            "id": 10375,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777791,
                "topic": "igwn.gwalert",
                "uuid": "505b1814-3195-4d49-88b2-4b9dbe427549",
                "title": "S250911bx - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911bx/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bx/view/"
                    },
                    "event": {
                        "far": 2.271018e-05,
                        "time": "2025-09-11T10:20:19.926Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 172.16010897394062,
                        "area_90": 1029.603479262799,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.002857142857142857,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "0050ab61fa959cfb4a684de46a204e1c",
                        "classification": {
                            "BBH": 0.028067412,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.971932588
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T10:21:01Z",
                    "superevent_id": "S250911bx",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:21:01.751172Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:21:01.751211Z",
                "modified": "2025-09-11T10:21:01.767280Z"
            }
        },
        {
            "id": 10376,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777794,
                "topic": "igwn.gwalert",
                "uuid": "79175fac-ab3a-444e-bfd0-22fc390651a5",
                "title": "S250911bx - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911bx/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911bx/view/"
                    },
                    "event": {
                        "far": 2.271018e-05,
                        "time": "2025-09-11T10:20:19.926Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 315.15476377679323,
                        "area_90": 1722.2305599733145,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0014814814814814814,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "0c8ff2f47e7e56834bbd6e861f1b24d9",
                        "classification": {
                            "BBH": 0.028067412025938328,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9719325879740617
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T10:25:38Z",
                    "superevent_id": "S250911bx",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:25:39.098401Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:25:39.098442Z",
                "modified": "2025-09-11T10:25:39.105383Z"
            }
        },
        {
            "id": 10377,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777801,
                "topic": "igwn.gwalert",
                "uuid": "c8ae2147-e1dd-4f6a-8258-d0cc111969eb",
                "title": "S250911by - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911by/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911by/view/"
                    },
                    "event": {
                        "far": 7.81996130962426e-06,
                        "time": "2025-09-11T10:33:27.799Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 1637.6717252182893,
                        "area_90": 8151.219882290855,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "72d145766bc8afaac6dd989da7d52f25",
                        "classification": {
                            "BBH": 0.16907615602266235,
                            "BNS": 2.981554873055099e-14,
                            "NSBH": 2.2701414360543794e-12,
                            "Terrestrial": 0.8309238439750377
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T10:33:54Z",
                    "superevent_id": "S250911by",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:33:55.479799Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:33:55.479833Z",
                "modified": "2025-09-11T10:33:55.496817Z"
            }
        },
        {
            "id": 10378,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777802,
                "topic": "igwn.gwalert",
                "uuid": "9d970b41-73a8-41af-9bbb-6046f6baebdb",
                "title": "S250911by - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911by/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911by/view/"
                    },
                    "event": {
                        "far": 7.81996130962426e-06,
                        "time": "2025-09-11T10:33:29.024Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 586.2466111800001,
                        "area_90": 2522.077403859557,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.08486533737058628,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "aeca427cd8828343dfe45000736698ad",
                        "classification": {
                            "BBH": 0.16907615602266235,
                            "BNS": 2.981554873055099e-14,
                            "NSBH": 2.2701414360543794e-12,
                            "Terrestrial": 0.8309238439750377
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T10:38:29Z",
                    "superevent_id": "S250911by",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:38:30.667632Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:38:30.667651Z",
                "modified": "2025-09-11T10:38:30.679089Z"
            }
        },
        {
            "id": 10379,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777803,
                "topic": "igwn.gwalert",
                "uuid": "487a0227-e54e-4599-9137-f0ce674ace4d",
                "title": "S250911cb - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911cb/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911cb/view/"
                    },
                    "event": {
                        "far": 2.56691e-06,
                        "time": "2025-09-11T10:43:35.371Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 1200.1899126519688,
                        "area_90": 4294.665582545542,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "4f1a24d2c0a4eb32c10f2ceecc45fb8a",
                        "classification": {
                            "BBH": 0.01262576174610941,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9873742382538906
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T10:45:07Z",
                    "superevent_id": "S250911cb",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:45:08.182719Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:45:08.182741Z",
                "modified": "2025-09-11T10:45:08.203517Z"
            }
        },
        {
            "id": 10380,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777804,
                "topic": "igwn.gwalert",
                "uuid": "d0656ce3-5327-4aa5-8b97-22c87488ddcb",
                "title": "S250911ce - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ce/view/"
                    },
                    "event": {
                        "far": 1.4945787420874557e-05,
                        "time": "2025-09-11T10:48:07.231Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 5703.839612855091,
                        "area_90": 21676.43697486881,
                        "duration": 0.28125,
                        "pipeline": "MLy",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "1dd7eeff3665b0a1b613f1c9f6ea00e0",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 88.0
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T10:48:49Z",
                    "superevent_id": "S250911ce",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:48:50.119642Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:48:50.119666Z",
                "modified": "2025-09-11T10:48:50.138914Z"
            }
        },
        {
            "id": 10381,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777805,
                "topic": "igwn.gwalert",
                "uuid": "44f091f2-34cc-40f2-acee-b331593d2c2e",
                "title": "S250911cb - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911cb/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911cb/view/"
                    },
                    "event": {
                        "far": 2.56691e-06,
                        "time": "2025-09-11T10:43:35.371Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 1200.1899126519688,
                        "area_90": 4294.665582545542,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "4f1a24d2c0a4eb32c10f2ceecc45fb8a",
                        "classification": {
                            "BBH": 0.01262576174610941,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9873742382538906
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T10:49:41Z",
                    "superevent_id": "S250911cb",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:49:42.400494Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:49:42.400515Z",
                "modified": "2025-09-11T10:49:42.412818Z"
            }
        },
        {
            "id": 10382,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777807,
                "topic": "igwn.gwalert",
                "uuid": "9f73dc98-4b18-4e5b-b0e2-5484f35ab0b6",
                "title": "S250911ce - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ce/view/"
                    },
                    "event": {
                        "far": 1.4945787420874557e-05,
                        "time": "2025-09-11T10:48:07.231Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 5703.839612855091,
                        "area_90": 21676.43697486881,
                        "duration": 0.28125,
                        "pipeline": "MLy",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "1dd7eeff3665b0a1b613f1c9f6ea00e0",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 88.0
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T10:53:23Z",
                    "superevent_id": "S250911ce",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T10:53:24.330270Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T10:53:24.330289Z",
                "modified": "2025-09-11T10:53:24.341430Z"
            }
        },
        {
            "id": 10383,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777812,
                "topic": "igwn.gwalert",
                "uuid": "c077f882-6a50-4edf-8d4d-f8ae10b8f8e6",
                "title": "S250911cg - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911cg/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911cg/view/"
                    },
                    "event": {
                        "far": 1.46564e-05,
                        "time": "2025-09-11T11:00:28.368Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 650.4525750386545,
                        "area_90": 2318.9683417184547,
                        "duration": 0.011197,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "ceb778acb5859ad3fbd8678c251282d8",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 339.118805
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T11:03:33Z",
                    "superevent_id": "S250911cg",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T11:03:33.880179Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T11:03:33.880213Z",
                "modified": "2025-09-11T11:03:33.891240Z"
            }
        },
        {
            "id": 10384,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777814,
                "topic": "igwn.gwalert",
                "uuid": "f80e81a4-085d-4313-a6de-00f5d0d2fd38",
                "title": "S250911cg - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911cg/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911cg/view/"
                    },
                    "event": {
                        "far": 1.46564e-05,
                        "time": "2025-09-11T11:00:28.368Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 650.4525750386545,
                        "area_90": 2318.9683417184547,
                        "duration": 0.011197,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "ceb778acb5859ad3fbd8678c251282d8",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 339.118805
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T11:08:07Z",
                    "superevent_id": "S250911cg",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T11:08:07.989156Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T11:08:07.989195Z",
                "modified": "2025-09-11T11:08:07.997475Z"
            }
        },
        {
            "id": 10385,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777815,
                "topic": "igwn.gwalert",
                "uuid": "7046893d-bbac-4ab8-bd67-3c443db430d8",
                "title": "S250911ck - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911ck/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ck/view/"
                    },
                    "event": {
                        "far": 1.8526e-05,
                        "time": "2025-09-11T11:13:50.540Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 244.23445075644955,
                        "area_90": 850.2044625989121,
                        "duration": 0.009414,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "8bb199a5d3cabee7cfd84496421b9fb9",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 500.366547
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T11:16:25Z",
                    "superevent_id": "S250911ck",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T11:16:25.839369Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T11:16:25.839405Z",
                "modified": "2025-09-11T11:16:25.848369Z"
            }
        },
        {
            "id": 10386,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777816,
                "topic": "igwn.gwalert",
                "uuid": "ca78d612-e61a-49ae-a6f5-dc343899fe6a",
                "title": "S250911ck - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911ck/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ck/view/"
                    },
                    "event": {
                        "far": 1.8526e-05,
                        "time": "2025-09-11T11:13:50.540Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 244.23445075644955,
                        "area_90": 850.2044625989121,
                        "duration": 0.009414,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "8bb199a5d3cabee7cfd84496421b9fb9",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 500.366547
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T11:21:00Z",
                    "superevent_id": "S250911ck",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T11:21:00.948031Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T11:21:00.948050Z",
                "modified": "2025-09-11T11:21:00.959843Z"
            }
        },
        {
            "id": 10387,
            "sequence_number": 4,
            "sequence_type": "UPDATE",
            "message": {
                "id": 5777817,
                "topic": "igwn.gwalert",
                "uuid": "01cea935-b6fe-4acc-b079-e8a88cd75c61",
                "title": "S250908y - UPDATE",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250908y/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250908y/view/"
                    },
                    "event": {
                        "far": 1.149682119198412e-10,
                        "time": "2025-09-08T14:34:28.958Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 1760.4184208304227,
                        "area_90": 9922.968767331628,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.002307692307692308,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "V1"
                        ],
                        "significant": true,
                        "skymap_hash": "6cb6b3c89d656f93614f129aeb13fdf9",
                        "classification": {
                            "BBH": 0.9998484770142113,
                            "BNS": 7.567629161433654e-23,
                            "NSBH": 5.0079948339106546e-21,
                            "Terrestrial": 0.00015152298578868795
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "UPDATE",
                    "sequence_num": 4,
                    "time_created": "2025-09-11T11:24:45Z",
                    "superevent_id": "S250908y",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T11:24:45.980080Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T11:24:45.980098Z",
                "modified": "2025-09-11T11:24:45.995294Z"
            }
        },
        {
            "id": 10388,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777826,
                "topic": "igwn.gwalert",
                "uuid": "5c302fc4-b462-4865-86dd-82f9b8f00a1d",
                "title": "S250911ct - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911ct/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ct/view/"
                    },
                    "event": {
                        "far": 7.3736e-06,
                        "time": "2025-09-11T11:58:53.453Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 935.8124144104511,
                        "area_90": 3104.547193636107,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.047742424242424246,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "564c1da54914ca0e141e27c61d3bf269",
                        "classification": {
                            "BBH": 0.004535037426048882,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9954649625739511
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T12:00:15Z",
                    "superevent_id": "S250911ct",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:00:16.583242Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:00:16.583271Z",
                "modified": "2025-09-11T12:00:16.597902Z"
            }
        },
        {
            "id": 10389,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777828,
                "topic": "igwn.gwalert",
                "uuid": "61e92970-e99d-4c90-8507-f593036fe693",
                "title": "S250911cu - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911cu/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911cu/view/"
                    },
                    "event": {
                        "far": 1.65944e-05,
                        "time": "2025-09-11T11:58:07.207Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 907.2764304732715,
                        "area_90": 3263.1736925810173,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "3d752eecdc1ebffba98f3103c615f3d7",
                        "classification": {
                            "BBH": 0.0010758151941466787,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9989241848058533
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T12:02:55Z",
                    "superevent_id": "S250911cu",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:02:55.412688Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:02:55.412706Z",
                "modified": "2025-09-11T12:02:55.428176Z"
            }
        },
        {
            "id": 10390,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777830,
                "topic": "igwn.gwalert",
                "uuid": "5ed87967-d9fd-431b-85ee-a7be44e721f1",
                "title": "S250911cv - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911cv/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911cv/view/"
                    },
                    "event": {
                        "far": 2.16898879443761e-05,
                        "time": "2025-09-11T12:03:45.911Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 2574.9529035078604,
                        "area_90": 14492.922665506432,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 0.7613628032414655,
                            "HasMassGap": 0.05538644688644689,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "84ec2741eb5e6ce86293835c48baca1f",
                        "classification": {
                            "BBH": 0.06894218942485593,
                            "BNS": 0.0,
                            "NSBH": 0.0007281944826969718,
                            "Terrestrial": 0.9303296160924471
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T12:04:15Z",
                    "superevent_id": "S250911cv",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:04:16.750002Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:04:16.750021Z",
                "modified": "2025-09-11T12:04:16.753905Z"
            }
        },
        {
            "id": 10391,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777831,
                "topic": "igwn.gwalert",
                "uuid": "c0c9f9ab-f5dd-41f3-8288-5df81a946702",
                "title": "S250911ct - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911ct/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ct/view/"
                    },
                    "event": {
                        "far": 7.3736e-06,
                        "time": "2025-09-11T11:58:53.453Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 935.8124144104511,
                        "area_90": 3104.547193636107,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.047742424242424246,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "564c1da54914ca0e141e27c61d3bf269",
                        "classification": {
                            "BBH": 0.004535037426048882,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9954649625739511
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T12:04:50Z",
                    "superevent_id": "S250911ct",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:04:50.924154Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:04:50.924188Z",
                "modified": "2025-09-11T12:04:50.935037Z"
            }
        },
        {
            "id": 10392,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777832,
                "topic": "igwn.gwalert",
                "uuid": "bc973971-ea81-4af1-8b92-78e3084c50cf",
                "title": "S250911cu - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911cu/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911cu/view/"
                    },
                    "event": {
                        "far": 1.65944e-05,
                        "time": "2025-09-11T11:58:07.207Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 907.2764304732715,
                        "area_90": 3263.1736925810173,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "3d752eecdc1ebffba98f3103c615f3d7",
                        "classification": {
                            "BBH": 0.0010758151941466787,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9989241848058533
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T12:07:28Z",
                    "superevent_id": "S250911cu",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:07:29.473684Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:07:29.473717Z",
                "modified": "2025-09-11T12:07:29.484893Z"
            }
        },
        {
            "id": 10393,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777834,
                "topic": "igwn.gwalert",
                "uuid": "20617417-ab27-45b4-9b75-1682746a4430",
                "title": "S250911cv - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911cv/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911cv/view/"
                    },
                    "event": {
                        "far": 2.16898879443761e-05,
                        "time": "2025-09-11T12:03:45.911Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 2574.9529035078604,
                        "area_90": 14492.922665506432,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 0.7613628032414655,
                            "HasMassGap": 0.05538644688644689,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "84ec2741eb5e6ce86293835c48baca1f",
                        "classification": {
                            "BBH": 0.06894218942485593,
                            "BNS": 0.0,
                            "NSBH": 0.0007281944826969718,
                            "Terrestrial": 0.9303296160924471
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T12:08:50Z",
                    "superevent_id": "S250911cv",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:08:51.036111Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:08:51.036130Z",
                "modified": "2025-09-11T12:08:51.052595Z"
            }
        },
        {
            "id": 10394,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777843,
                "topic": "igwn.gwalert",
                "uuid": "7274c20e-516e-47eb-8d0e-0200d2f981e0",
                "title": "S250911db - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911db/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911db/view/"
                    },
                    "event": {
                        "far": 8.54879e-06,
                        "time": "2025-09-11T12:39:08.230Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 757.0428679804727,
                        "area_90": 2426.3979283054837,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "76e7ffce812c3854d467d646489a197a",
                        "classification": {
                            "BBH": 0.0030167903664435336,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9969832096335565
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T12:43:16Z",
                    "superevent_id": "S250911db",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:43:16.948291Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:43:16.948309Z",
                "modified": "2025-09-11T12:43:16.960042Z"
            }
        },
        {
            "id": 10395,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777845,
                "topic": "igwn.gwalert",
                "uuid": "21fc7789-f502-4041-9c81-b722ba349c39",
                "title": "S250911db - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911db/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911db/view/"
                    },
                    "event": {
                        "far": 8.54879e-06,
                        "time": "2025-09-11T12:39:08.230Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 757.0428679804727,
                        "area_90": 2426.3979283054837,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "76e7ffce812c3854d467d646489a197a",
                        "classification": {
                            "BBH": 0.0030167903664435336,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9969832096335565
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T12:47:50Z",
                    "superevent_id": "S250911db",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:47:50.891928Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:47:50.891947Z",
                "modified": "2025-09-11T12:47:50.901754Z"
            }
        },
        {
            "id": 10396,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777846,
                "topic": "igwn.gwalert",
                "uuid": "98419021-2add-4ff9-a314-1543d7f671e4",
                "title": "S250911dd - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911dd/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911dd/view/"
                    },
                    "event": {
                        "far": 2.433467e-06,
                        "time": "2025-09-11T12:47:48.846Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 598.2065456242592,
                        "area_90": 3707.1600308977245,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 9.015074930093019e-05,
                            "HasMassGap": 0.09974636643549689,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "d0304935aa3fb1f4d84a6d15f614e676",
                        "classification": {
                            "BBH": 0.334722883,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.665277117
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T12:48:36Z",
                    "superevent_id": "S250911dd",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:48:37.054372Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:48:37.054391Z",
                "modified": "2025-09-11T12:48:37.058368Z"
            }
        },
        {
            "id": 10397,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777847,
                "topic": "igwn.gwalert",
                "uuid": "f117e909-4bd2-45cc-ba3e-a3eaa26c4bb8",
                "title": "S250911df - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911df/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911df/view/"
                    },
                    "event": {
                        "far": 5.125855e-06,
                        "time": "2025-09-11T12:48:35.618Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 411.1489744478205,
                        "area_90": 1587.9435767395278,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.10549607423548907,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "6701f55b87b655b236237b785b2f383d",
                        "classification": {
                            "BBH": 0.155218521,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.844781479
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T12:49:19Z",
                    "superevent_id": "S250911df",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:49:20.254815Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:49:20.254833Z",
                "modified": "2025-09-11T12:49:20.259766Z"
            }
        },
        {
            "id": 10398,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777850,
                "topic": "igwn.gwalert",
                "uuid": "e63cf25f-c75b-4855-86fb-62683acd33c5",
                "title": "S250911dd - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911dd/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911dd/view/"
                    },
                    "event": {
                        "far": 2.433467e-06,
                        "time": "2025-09-11T12:47:48.846Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 997.9201441560775,
                        "area_90": 5999.270975969422,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.06940975512306706,
                            "HasMassGap": 0.46070761131943916,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "a4a1ccb3ade3bbfe6269a67c95195052",
                        "classification": {
                            "BBH": 0.20029817303949,
                            "BNS": 0.0,
                            "NSBH": 0.13442470971366843,
                            "Terrestrial": 0.6652771172468417
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T12:53:11Z",
                    "superevent_id": "S250911dd",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:53:12.078205Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:53:12.078233Z",
                "modified": "2025-09-11T12:53:12.085730Z"
            }
        },
        {
            "id": 10399,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777851,
                "topic": "igwn.gwalert",
                "uuid": "8491830e-2c1d-459e-83ba-eab3888fa302",
                "title": "S250911df - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911df/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911df/view/"
                    },
                    "event": {
                        "far": 5.125855e-06,
                        "time": "2025-09-11T12:48:35.618Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 462.2409751000502,
                        "area_90": 2143.55596986932,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "0ccc07458a94b7ce95fc8116cfd22125",
                        "classification": {
                            "BBH": 0.15521852120909108,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.8447814787909089
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T12:53:54Z",
                    "superevent_id": "S250911df",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:53:55.306451Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:53:55.306471Z",
                "modified": "2025-09-11T12:53:55.322337Z"
            }
        },
        {
            "id": 10400,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777852,
                "topic": "igwn.gwalert",
                "uuid": "6b1d658a-d1cb-4835-9ceb-50522da26af9",
                "title": "S250911dh - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911dh/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911dh/view/"
                    },
                    "event": {
                        "far": 1.041752570442464e-05,
                        "time": "2025-09-11T12:54:07.966Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 639.6991252093864,
                        "area_90": 2406.2548808204156,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.005275362318840579,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "b086c4f5af4d77c27baf9e5507d19a00",
                        "classification": {
                            "BBH": 0.10917041299964785,
                            "BNS": 1.1552439020153354e-17,
                            "NSBH": 8.533431974281607e-16,
                            "Terrestrial": 0.8908295870003513
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T12:54:33Z",
                    "superevent_id": "S250911dh",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:54:34.468118Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:54:34.468138Z",
                "modified": "2025-09-11T12:54:34.475382Z"
            }
        },
        {
            "id": 10401,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777854,
                "topic": "igwn.gwalert",
                "uuid": "59461a6b-6786-47c6-9565-b330ee1af077",
                "title": "S250911dh - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911dh/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911dh/view/"
                    },
                    "event": {
                        "far": 1.164934810241493e-05,
                        "time": "2025-09-11T12:54:07.446Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 285.7794861944024,
                        "area_90": 3222.8875976108807,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "bfaeae3af06170c1cfdbe910341e2aca",
                        "classification": {
                            "BBH": 0.12599976360208678,
                            "BNS": 1.1234714380883341e-17,
                            "NSBH": 8.310505318528829e-16,
                            "Terrestrial": 0.8740002363979124
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T12:59:07Z",
                    "superevent_id": "S250911dh",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T12:59:09.410008Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T12:59:09.410026Z",
                "modified": "2025-09-11T12:59:09.416456Z"
            }
        },
        {
            "id": 10402,
            "sequence_number": 4,
            "sequence_type": "UPDATE",
            "message": {
                "id": 5777856,
                "topic": "igwn.gwalert",
                "uuid": "2fa0408e-4adb-4a48-bea1-4ee17a642214",
                "title": "S250911ac - UPDATE",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911ac/files/bayestar.multiorder.fits,2",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911ac/view/"
                    },
                    "event": {
                        "far": 6.018337100263316e-09,
                        "time": "2025-09-11T07:46:39.272Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 252.4700196500842,
                        "area_90": 952.178640492069,
                        "duration": null,
                        "pipeline": "pycbc",
                        "properties": {
                            "HasNS": 6.442032849326718e-05,
                            "HasMassGap": 0.06959291839034507,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": true,
                        "skymap_hash": "4cb050c8ce65f660ad8587508aeec047",
                        "classification": {
                            "BBH": 0.9635365487842076,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.03646345121579242
                        },
                        "skymap_version": 2,
                        "central_frequency": null
                    },
                    "alert_type": "UPDATE",
                    "sequence_num": 4,
                    "time_created": "2025-09-11T13:12:40Z",
                    "superevent_id": "S250911ac",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T13:12:40.918883Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T13:12:40.918904Z",
                "modified": "2025-09-11T13:12:40.952574Z"
            }
        },
        {
            "id": 10403,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777861,
                "topic": "igwn.gwalert",
                "uuid": "837790ad-87cf-4f29-9284-40d870568f28",
                "title": "S250911dn - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911dn/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911dn/view/"
                    },
                    "event": {
                        "far": 2.1853e-05,
                        "time": "2025-09-11T13:38:44.973Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 96.51876919928422,
                        "area_90": 426.3611717672729,
                        "duration": 0.012709,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "fb8bae5df110333a2269225430545e7f",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 542.952515
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T13:40:04Z",
                    "superevent_id": "S250911dn",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T13:40:05.818289Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T13:40:05.819176Z",
                "modified": "2025-09-11T13:40:05.828308Z"
            }
        },
        {
            "id": 10404,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777863,
                "topic": "igwn.gwalert",
                "uuid": "2ebbdf60-0dfe-4ed5-8243-7ab17fffd27f",
                "title": "S250911dn - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911dn/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911dn/view/"
                    },
                    "event": {
                        "far": 2.1853e-05,
                        "time": "2025-09-11T13:38:44.973Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 96.51876919928422,
                        "area_90": 426.3611717672729,
                        "duration": 0.012709,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "fb8bae5df110333a2269225430545e7f",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 542.952515
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T13:44:39Z",
                    "superevent_id": "S250911dn",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T13:44:39.921990Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T13:44:39.922019Z",
                "modified": "2025-09-11T13:44:39.938159Z"
            }
        },
        {
            "id": 10405,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777867,
                "topic": "igwn.gwalert",
                "uuid": "22aa9f38-c9d7-4dff-a51c-d42de8afda48",
                "title": "S250911do - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911do/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911do/view/"
                    },
                    "event": {
                        "far": 1.34585e-05,
                        "time": "2025-09-11T13:53:04.386Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 103.23311836097356,
                        "area_90": 344.1103945365785,
                        "duration": 0.008685,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "e8992d0dec4e126205b8d09839f801d0",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 270.256378
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T13:54:48Z",
                    "superevent_id": "S250911do",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T13:54:49.521043Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T13:54:49.521063Z",
                "modified": "2025-09-11T13:54:49.536970Z"
            }
        },
        {
            "id": 10406,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777869,
                "topic": "igwn.gwalert",
                "uuid": "727b2708-886a-40f2-86d4-c670c634fc9d",
                "title": "S250911do - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911do/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911do/view/"
                    },
                    "event": {
                        "far": 1.34585e-05,
                        "time": "2025-09-11T13:53:04.386Z",
                        "group": "Burst",
                        "search": "AllSky",
                        "area_50": 103.23311836097356,
                        "area_90": 344.1103945365785,
                        "duration": 0.008685,
                        "pipeline": "CWB",
                        "properties": {},
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "e8992d0dec4e126205b8d09839f801d0",
                        "classification": {},
                        "skymap_version": 0,
                        "central_frequency": 270.256378
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T13:59:23Z",
                    "superevent_id": "S250911do",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T13:59:24.511791Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T13:59:24.511810Z",
                "modified": "2025-09-11T13:59:24.527300Z"
            }
        },
        {
            "id": 10407,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777878,
                "topic": "igwn.gwalert",
                "uuid": "623e5850-bb50-4c27-8129-2748bc2cea06",
                "title": "S250911dy - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911dy/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911dy/view/"
                    },
                    "event": {
                        "far": 1.328627733172506e-05,
                        "time": "2025-09-11T14:33:35.384Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 157.7347494468737,
                        "area_90": 1067.5815167086043,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.10872635697635698,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "39e3f57f70bdfabc706d859b2911623d",
                        "classification": {
                            "BBH": 0.08400162660238958,
                            "BNS": 7.242956213156407e-17,
                            "NSBH": 4.581827459860731e-15,
                            "Terrestrial": 0.9159983733976058
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T14:34:02Z",
                    "superevent_id": "S250911dy",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T14:34:03.411051Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T14:34:03.411070Z",
                "modified": "2025-09-11T14:34:03.415410Z"
            }
        },
        {
            "id": 10408,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777881,
                "topic": "igwn.gwalert",
                "uuid": "ca18c29f-5579-4471-8f46-bf61b679f33f",
                "title": "S250911dy - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911dy/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911dy/view/"
                    },
                    "event": {
                        "far": 1.22083407745402e-05,
                        "time": "2025-09-11T14:33:35.377Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 882.7270913508447,
                        "area_90": 7321.997760822222,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.05329138138749124,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "b655ed3660ae0d53d266105165ea8ce3",
                        "classification": {
                            "BBH": 0.11908335958777658,
                            "BNS": 6.553700474799984e-17,
                            "NSBH": 4.154220020155514e-15,
                            "Terrestrial": 0.8809166404122192
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T14:38:37Z",
                    "superevent_id": "S250911dy",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T14:38:38.482577Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T14:38:38.482595Z",
                "modified": "2025-09-11T14:38:38.490867Z"
            }
        },
        {
            "id": 10409,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777885,
                "topic": "igwn.gwalert",
                "uuid": "7d388b88-ba93-4bf8-a3c8-af74ae330088",
                "title": "S250911eg - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911eg/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911eg/view/"
                    },
                    "event": {
                        "far": 1.7831e-05,
                        "time": "2025-09-11T14:52:50.633Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 664.7205670072443,
                        "area_90": 2235.0389771973378,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "dfb91e5ca0e396c3c9fa68b448fd1ec6",
                        "classification": {
                            "BBH": 0.001163415635871301,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9988365843641287
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-11T14:55:36Z",
                    "superevent_id": "S250911eg",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T14:55:36.885031Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T14:55:36.885058Z",
                "modified": "2025-09-11T14:55:36.900498Z"
            }
        },
        {
            "id": 10410,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5777887,
                "topic": "igwn.gwalert",
                "uuid": "f1eca357-ddf2-4de7-b5bc-b6d1db60ae8b",
                "title": "S250911eg - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250911eg/files/cwb.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250911eg/view/"
                    },
                    "event": {
                        "far": 1.7831e-05,
                        "time": "2025-09-11T14:52:50.633Z",
                        "group": "CBC",
                        "search": "BBH",
                        "area_50": 664.7205670072443,
                        "area_90": 2235.0389771973378,
                        "duration": null,
                        "pipeline": "CWB",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "dfb91e5ca0e396c3c9fa68b448fd1ec6",
                        "classification": {
                            "BBH": 0.001163415635871301,
                            "BNS": 0.0,
                            "NSBH": 0.0,
                            "Terrestrial": 0.9988365843641287
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-11T15:00:10Z",
                    "superevent_id": "S250911eg",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-11T15:00:10.859971Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-11T15:00:10.859995Z",
                "modified": "2025-09-11T15:00:10.867115Z"
            }
        },
        {
            "id": 10411,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778010,
                "topic": "igwn.gwalert",
                "uuid": "67daa264-771f-4b91-9da7-f82869a914b9",
                "title": "S250912e - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912e/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912e/view/"
                    },
                    "event": {
                        "far": 1.466283768615225e-05,
                        "time": "2025-09-12T06:22:55.944Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 2167.895485580444,
                        "area_90": 14914.248075402435,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.005275362318840579,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "431022c13807fc693acfc891e6f126e1",
                        "classification": {
                            "BBH": 0.09417613300955649,
                            "BNS": 2.560043431249204e-16,
                            "NSBH": 1.6922125522047143e-14,
                            "Terrestrial": 0.9058238669904264
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-12T06:23:21Z",
                    "superevent_id": "S250912e",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T06:23:21.894653Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T06:23:21.894675Z",
                "modified": "2025-09-12T06:23:21.913757Z"
            }
        },
        {
            "id": 10412,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778012,
                "topic": "igwn.gwalert",
                "uuid": "dbce55c8-d824-4f52-83c6-8c77c7692edc",
                "title": "S250912e - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912e/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912e/view/"
                    },
                    "event": {
                        "far": 1.466283768615225e-05,
                        "time": "2025-09-12T06:22:55.940Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 1539.0547219059772,
                        "area_90": 14086.704541224226,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.005275362318840579,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "ae33c846a00d81a5c654569a4df05d32",
                        "classification": {
                            "BBH": 0.09417613300955649,
                            "BNS": 2.560043431249204e-16,
                            "NSBH": 1.6922125522047143e-14,
                            "Terrestrial": 0.9058238669904264
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-12T06:27:57Z",
                    "superevent_id": "S250912e",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T06:27:59.061111Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T06:27:59.061131Z",
                "modified": "2025-09-12T06:27:59.074658Z"
            }
        },
        {
            "id": 10413,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778015,
                "topic": "igwn.gwalert",
                "uuid": "f7520173-ad5c-4335-a3c7-beabc1708899",
                "title": "S250912f - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912f/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912f/view/"
                    },
                    "event": {
                        "far": 8.857545291133991e-10,
                        "time": "2025-09-12T06:40:08.839Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 160.56736549946137,
                        "area_90": 590.8627262286616,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": true,
                        "skymap_hash": "a5a9ee2fc7679e521be754efe3cfd7d9",
                        "classification": {
                            "BBH": 0.9992024536193752,
                            "BNS": 4.23655442766012e-28,
                            "NSBH": 1.2328226127419444e-12,
                            "Terrestrial": 0.0007975463793920001
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-12T06:40:36Z",
                    "superevent_id": "S250912f",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T06:40:37.776345Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T06:40:37.776368Z",
                "modified": "2025-09-12T06:40:37.791708Z"
            }
        },
        {
            "id": 10414,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778018,
                "topic": "igwn.gwalert",
                "uuid": "6bf4c7eb-9ec1-493f-8839-03824374fc12",
                "title": "S250912f - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912f/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912f/view/"
                    },
                    "event": {
                        "far": 2.873133719541769e-13,
                        "time": "2025-09-12T06:40:08.840Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 120.38618223497677,
                        "area_90": 393.2090727814317,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": true,
                        "skymap_hash": "3053a54e9c600844a0c24d3df901674e",
                        "classification": {
                            "BBH": 0.999999317888975,
                            "BNS": 1.7070903270826944e-30,
                            "NSBH": 2.674767351326296e-28,
                            "Terrestrial": 6.821110249966011e-07
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-12T06:45:11Z",
                    "superevent_id": "S250912f",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T06:45:12.781394Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T06:45:12.781412Z",
                "modified": "2025-09-12T06:45:12.790151Z"
            }
        },
        {
            "id": 10415,
            "sequence_number": 3,
            "sequence_type": "INITIAL",
            "message": {
                "id": 5778026,
                "topic": "igwn.gwalert",
                "uuid": "6097b79c-10b9-4f76-bab9-48ac1bf39315",
                "title": "S250912f - INITIAL",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912f/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912f/view/"
                    },
                    "event": {
                        "far": 2.873133719541769e-13,
                        "time": "2025-09-12T06:40:08.840Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 120.38618223497677,
                        "area_90": 393.2090727814317,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": true,
                        "skymap_hash": "3053a54e9c600844a0c24d3df901674e",
                        "classification": {
                            "BBH": 0.999999317888975,
                            "BNS": 1.7070903270826944e-30,
                            "NSBH": 2.674767351326296e-28,
                            "Terrestrial": 6.821110249966011e-07
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "INITIAL",
                    "sequence_num": 3,
                    "time_created": "2025-09-12T07:14:51Z",
                    "superevent_id": "S250912f",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T07:14:52.967473Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T07:14:52.967495Z",
                "modified": "2025-09-12T07:14:52.979500Z"
            }
        },
        {
            "id": 10416,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778027,
                "topic": "igwn.gwalert",
                "uuid": "71bbaa92-5831-4345-8872-6173393220b7",
                "title": "S250912h - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912h/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912h/view/"
                    },
                    "event": {
                        "far": 2.01027e-05,
                        "time": "2025-09-12T07:16:17.200Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 4836.849277351955,
                        "area_90": 14496.279840087276,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.29737767672065024,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "8c0266864f1cea29dc9ecf83fee7cd5a",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.000209752,
                            "NSBH": 0.000419505,
                            "Terrestrial": 0.999370743
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-12T07:17:19Z",
                    "superevent_id": "S250912h",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T07:17:19.583409Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T07:17:19.583433Z",
                "modified": "2025-09-12T07:17:19.596401Z"
            }
        },
        {
            "id": 10417,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778029,
                "topic": "igwn.gwalert",
                "uuid": "cf9d695a-c9a6-41cb-968b-47fd2a3ca184",
                "title": "S250912h - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912h/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912h/view/"
                    },
                    "event": {
                        "far": 2.01027e-05,
                        "time": "2025-09-12T07:16:17.200Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 13609.985750744283,
                        "area_90": 32581.3793070975,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.38801607175197117,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "3d6633c6cba1845e3ccbc6326b9a0876",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.0,
                            "NSBH": 0.0006292568742721772,
                            "Terrestrial": 0.9993707431257278
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-12T07:21:54Z",
                    "superevent_id": "S250912h",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T07:21:55.487760Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T07:21:55.487781Z",
                "modified": "2025-09-12T07:21:55.500653Z"
            }
        },
        {
            "id": 10418,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778042,
                "topic": "igwn.gwalert",
                "uuid": "9f07af28-d06d-4509-9b05-0266659d0096",
                "title": "S250912j - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912j/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912j/view/"
                    },
                    "event": {
                        "far": 1.804774365155026e-05,
                        "time": "2025-09-12T08:40:22.966Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 6209.094387272213,
                        "area_90": 24436.873773968335,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.5391325949592202,
                            "HasRemnant": 1.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "bf752b97803ee950d47872e04ceb9b5b",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.0026017271024784553,
                            "NSBH": 0.0007856377684379768,
                            "Terrestrial": 0.9966126351290836
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-12T08:40:50Z",
                    "superevent_id": "S250912j",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T08:40:51.187852Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T08:40:51.187874Z",
                "modified": "2025-09-12T08:40:51.201924Z"
            }
        },
        {
            "id": 10419,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778044,
                "topic": "igwn.gwalert",
                "uuid": "1c2e8cac-b673-4a73-9fd6-2d34ceade4df",
                "title": "S250912j - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912j/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912j/view/"
                    },
                    "event": {
                        "far": 1.804774365155026e-05,
                        "time": "2025-09-12T08:40:22.966Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 6209.094387272213,
                        "area_90": 24436.873773968335,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.5391325949592202,
                            "HasRemnant": 1.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "bf752b97803ee950d47872e04ceb9b5b",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.0026017271024784553,
                            "NSBH": 0.0007856377684379768,
                            "Terrestrial": 0.9966126351290836
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-12T08:45:25Z",
                    "superevent_id": "S250912j",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T08:45:27.088264Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T08:45:27.088284Z",
                "modified": "2025-09-12T08:45:27.096610Z"
            }
        },
        {
            "id": 10420,
            "sequence_number": 4,
            "sequence_type": "UPDATE",
            "message": {
                "id": 5778082,
                "topic": "igwn.gwalert",
                "uuid": "9c1d2a58-a629-4f00-9e9c-47e6f2e78b48",
                "title": "S250912f - UPDATE",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912f/files/bayestar.multiorder.fits,2",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912f/view/"
                    },
                    "event": {
                        "far": 2.873133719541769e-13,
                        "time": "2025-09-12T06:40:08.840Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 102.03974770918892,
                        "area_90": 297.94924404996425,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": true,
                        "skymap_hash": "2397ac31fe94e4afda65826203d513cd",
                        "classification": {
                            "BBH": 0.9992024536193752,
                            "BNS": 4.23655442766012e-28,
                            "NSBH": 1.2328226127419444e-12,
                            "Terrestrial": 0.0007975463793920001
                        },
                        "skymap_version": 2,
                        "central_frequency": null
                    },
                    "alert_type": "UPDATE",
                    "sequence_num": 4,
                    "time_created": "2025-09-12T13:24:46Z",
                    "superevent_id": "S250912f",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T13:24:47.236700Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T13:24:47.236722Z",
                "modified": "2025-09-12T13:24:47.342273Z"
            }
        },
        {
            "id": 10421,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778126,
                "topic": "igwn.gwalert",
                "uuid": "0aecab5f-c9c7-4f83-b51d-33a75d36097e",
                "title": "S250912s - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912s/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912s/view/"
                    },
                    "event": {
                        "far": 3.417643483771826e-06,
                        "time": "2025-09-12T18:21:28.657Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 725.5693562850539,
                        "area_90": 18169.02883153134,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.5123063812720009,
                            "HasRemnant": 1.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "f6ee2a9b9ca78522d88c02d0335915c8",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.011641663177568906,
                            "NSBH": 0.0014903903133420655,
                            "Terrestrial": 0.986867946509089
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-12T18:21:55Z",
                    "superevent_id": "S250912s",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T18:21:56.426928Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T18:21:56.426950Z",
                "modified": "2025-09-12T18:21:56.444821Z"
            }
        },
        {
            "id": 10422,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778127,
                "topic": "igwn.gwalert",
                "uuid": "8e458fb1-7a94-4ff3-acb2-6232ec2a1815",
                "title": "S250912s - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912s/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912s/view/"
                    },
                    "event": {
                        "far": 3.417643483771826e-06,
                        "time": "2025-09-12T18:21:28.657Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 725.5693562850539,
                        "area_90": 18169.02883153134,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.5123063812720009,
                            "HasRemnant": 1.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "f6ee2a9b9ca78522d88c02d0335915c8",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.011641663177568906,
                            "NSBH": 0.0014903903133420655,
                            "Terrestrial": 0.986867946509089
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-12T18:26:29Z",
                    "superevent_id": "S250912s",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T18:26:30.580784Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T18:26:30.580805Z",
                "modified": "2025-09-12T18:26:30.593910Z"
            }
        },
        {
            "id": 10423,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778143,
                "topic": "igwn.gwalert",
                "uuid": "2381890f-2b39-4b7e-a3d8-f6ebf29f8a06",
                "title": "S250912x - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912x/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912x/view/"
                    },
                    "event": {
                        "far": 5.296114102177817e-07,
                        "time": "2025-09-12T20:04:17.576Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 2284.976949087402,
                        "area_90": 12132.82893517263,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.013324698290215533,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "061405015805fed723fdd71593df2207",
                        "classification": {
                            "BBH": 0.7620192826413718,
                            "BNS": 1.908156205694582e-19,
                            "NSBH": 1.462336841629156e-10,
                            "Terrestrial": 0.23798071721239455
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-12T20:04:55Z",
                    "superevent_id": "S250912x",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T20:04:55.862133Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T20:04:55.862158Z",
                "modified": "2025-09-12T20:04:55.880646Z"
            }
        },
        {
            "id": 10424,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778144,
                "topic": "igwn.gwalert",
                "uuid": "99c9f8cf-b88c-441f-b9ef-6bd50d4d0566",
                "title": "S250912x - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250912x/files/bayestar.multiorder.fits,1",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250912x/view/"
                    },
                    "event": {
                        "far": 7.85244662472298e-08,
                        "time": "2025-09-12T20:04:17.572Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 1254.324352768089,
                        "area_90": 9681.252197510812,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "5c0dfa875b45271c624a27cbbd537f57",
                        "classification": {
                            "BBH": 0.944368089569413,
                            "BNS": 7.544728378393802e-21,
                            "NSBH": 5.654061972551264e-19,
                            "Terrestrial": 0.05563191043058702
                        },
                        "skymap_version": 1,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-12T20:09:30Z",
                    "superevent_id": "S250912x",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-12T20:09:30.867087Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-12T20:09:30.867109Z",
                "modified": "2025-09-12T20:09:30.888317Z"
            }
        },
        {
            "id": 10425,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778279,
                "topic": "igwn.gwalert",
                "uuid": "e72fed5d-8f3b-4278-934e-33da0a9c7f41",
                "title": "S250913e - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250913e/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250913e/view/"
                    },
                    "event": {
                        "far": 5.585354e-06,
                        "time": "2025-09-13T09:24:01.584Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 4252.700900284982,
                        "area_90": 14962.087813179474,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.28354435288483254,
                            "HasRemnant": 0.8154106228687868
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "33c046570d7355a2d167c466b006ca2f",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.000689535,
                            "NSBH": 0.001379071,
                            "Terrestrial": 0.997931394
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-13T09:24:47Z",
                    "superevent_id": "S250913e",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-13T09:24:47.768181Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-13T09:24:47.768203Z",
                "modified": "2025-09-13T09:24:47.785534Z"
            }
        },
        {
            "id": 10426,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778281,
                "topic": "igwn.gwalert",
                "uuid": "bd51735c-96bd-45a0-a60b-7630bef022ab",
                "title": "S250913e - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250913e/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250913e/view/"
                    },
                    "event": {
                        "far": 5.585354e-06,
                        "time": "2025-09-13T09:24:01.584Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 4252.700900284982,
                        "area_90": 14962.087813179474,
                        "duration": null,
                        "pipeline": "MBTA",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.28354435288483254,
                            "HasRemnant": 0.8154106228687868
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "33c046570d7355a2d167c466b006ca2f",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.000689535,
                            "NSBH": 0.001379071,
                            "Terrestrial": 0.997931394
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-13T09:29:22Z",
                    "superevent_id": "S250913e",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-13T09:29:22.700321Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-13T09:29:22.700341Z",
                "modified": "2025-09-13T09:29:22.712799Z"
            }
        },
        {
            "id": 10427,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778287,
                "topic": "igwn.gwalert",
                "uuid": "bab9d41d-9f0a-40cd-a9c3-07588a7277c9",
                "title": "S250913f - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250913f/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250913f/view/"
                    },
                    "event": {
                        "far": 8.808904567558784e-06,
                        "time": "2025-09-13T09:55:45.933Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 232.69416313479604,
                        "area_90": 9520.947111275478,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.49050865800865795,
                            "HasRemnant": 1.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "de888981a8142b20ccbadf22bf790128",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.0032523187012258497,
                            "NSBH": 0.0009016983303218068,
                            "Terrestrial": 0.9958459829684524
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-13T09:56:10Z",
                    "superevent_id": "S250913f",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-13T09:56:10.837956Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-13T09:56:10.837975Z",
                "modified": "2025-09-13T09:56:10.855188Z"
            }
        },
        {
            "id": 10428,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778289,
                "topic": "igwn.gwalert",
                "uuid": "18b649a8-c2e1-4f08-9874-5b4d32fcb8b9",
                "title": "S250913f - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250913f/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250913f/view/"
                    },
                    "event": {
                        "far": 8.808904567558784e-06,
                        "time": "2025-09-13T09:55:45.933Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 232.69416313479604,
                        "area_90": 9520.947111275478,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.49050865800865795,
                            "HasRemnant": 1.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "de888981a8142b20ccbadf22bf790128",
                        "classification": {
                            "BBH": 0.0,
                            "BNS": 0.0032523187012258497,
                            "NSBH": 0.0009016983303218068,
                            "Terrestrial": 0.9958459829684524
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-13T10:00:44Z",
                    "superevent_id": "S250913f",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-13T10:00:45.862181Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-13T10:00:45.862202Z",
                "modified": "2025-09-13T10:00:45.877730Z"
            }
        },
        {
            "id": 10429,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778397,
                "topic": "igwn.gwalert",
                "uuid": "62dc8ed3-929f-4979-bff0-24e013a8b97a",
                "title": "S250913n - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250913n/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250913n/view/"
                    },
                    "event": {
                        "far": 1.483728556195274e-05,
                        "time": "2025-09-13T22:34:28.700Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 2220.770985228748,
                        "area_90": 15083.785391735095,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 0.9046870787173056,
                            "HasMassGap": 0.05538644688644689,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "e0e738878cfa646d022f266abd7fabc0",
                        "classification": {
                            "BBH": 0.08492404912299358,
                            "BNS": 0.0,
                            "NSBH": 0.0012246190433079637,
                            "Terrestrial": 0.9138513318336985
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-13T22:34:54Z",
                    "superevent_id": "S250913n",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-13T22:34:54.944832Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-13T22:34:54.944858Z",
                "modified": "2025-09-13T22:34:54.964188Z"
            }
        },
        {
            "id": 10430,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778399,
                "topic": "igwn.gwalert",
                "uuid": "96a7169a-7b09-44a5-8186-5e9e1a26b109",
                "title": "S250913n - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250913n/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250913n/view/"
                    },
                    "event": {
                        "far": 1.483728556195274e-05,
                        "time": "2025-09-13T22:34:28.700Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 2220.770985228748,
                        "area_90": 15083.785391735095,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 0.9046870787173056,
                            "HasMassGap": 0.05538644688644689,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "e0e738878cfa646d022f266abd7fabc0",
                        "classification": {
                            "BBH": 0.08492404912299358,
                            "BNS": 0.0,
                            "NSBH": 0.0012246190433079637,
                            "Terrestrial": 0.9138513318336985
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-13T22:39:28Z",
                    "superevent_id": "S250913n",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-13T22:39:30.060807Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-13T22:39:30.060828Z",
                "modified": "2025-09-13T22:39:30.074033Z"
            }
        },
        {
            "id": 10431,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778863,
                "topic": "igwn.gwalert",
                "uuid": "e052d4b9-f1d8-4e47-a718-3aea0169d67a",
                "title": "S250916c - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250916c/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250916c/view/"
                    },
                    "event": {
                        "far": 6.944821052456973e-06,
                        "time": "2025-09-16T01:34:33.472Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 7336.265752790811,
                        "area_90": 25192.238054658388,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 0.656260770189021,
                            "HasMassGap": 0.05538644688644689,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "1a8299d8ba31a39ffa51d40b02094984",
                        "classification": {
                            "BBH": 0.26462488429658465,
                            "BNS": 0.0,
                            "NSBH": 0.004282566223878677,
                            "Terrestrial": 0.7310925494795366
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-16T01:34:59Z",
                    "superevent_id": "S250916c",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-16T01:35:00.965705Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-16T01:35:00.965728Z",
                "modified": "2025-09-16T01:35:00.991376Z"
            }
        },
        {
            "id": 10432,
            "sequence_number": 2,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778864,
                "topic": "igwn.gwalert",
                "uuid": "dd154f7f-19c8-4b92-9b00-70c639afe1f9",
                "title": "S250916c - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250916c/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250916c/view/"
                    },
                    "event": {
                        "far": 6.944821052456973e-06,
                        "time": "2025-09-16T01:34:33.472Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 7336.265752790811,
                        "area_90": 25192.238054658388,
                        "duration": null,
                        "pipeline": "spiir",
                        "properties": {
                            "HasNS": 0.656260770189021,
                            "HasMassGap": 0.05538644688644689,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "L1",
                            "V1"
                        ],
                        "significant": false,
                        "skymap_hash": "1a8299d8ba31a39ffa51d40b02094984",
                        "classification": {
                            "BBH": 0.26462488429658465,
                            "BNS": 0.0,
                            "NSBH": 0.004282566223878677,
                            "Terrestrial": 0.7310925494795366
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-16T01:39:35Z",
                    "superevent_id": "S250916c",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-16T01:39:36.979807Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-16T01:39:36.979829Z",
                "modified": "2025-09-16T01:39:36.991236Z"
            }
        },
        {
            "id": 10433,
            "sequence_number": 1,
            "sequence_type": "PRELIMINARY",
            "message": {
                "id": 5778886,
                "topic": "igwn.gwalert",
                "uuid": "c60a2e1b-408e-4531-ac95-d8b8d7c1476c",
                "title": "S250916m - PRELIMINARY",
                "submitter": "cody.messick-30d512c8",
                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250916m/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250916m/view/"
                    },
                    "event": {
                        "far": 1.815799163300748e-05,
                        "time": "2025-09-16T04:22:57.505Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 958.8929896537584,
                        "area_90": 3718.9101419306808,
                        "duration": null,
                        "pipeline": "pycbc",
                        "properties": {
                            "HasNS": 1.0,
                            "HasMassGap": 0.0,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
                            "H1",
                            "L1"
                        ],
                        "significant": false,
                        "skymap_hash": "c1076072347b2a87a0f42c1f88143e15",
                        "classification": {
                            "BBH": 0.0004581620906122961,
                            "BNS": 0.0,
                            "NSBH": 0.002219570356135949,
                            "Terrestrial": 0.9973222675532517
                        },
                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 1,
                    "time_created": "2025-09-16T04:23:27Z",
                    "superevent_id": "S250916m",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-16T04:23:27.995225Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-16T04:23:27.995247Z",
                "modified": "2025-09-16T04:23:28.015619Z"
            }
        }
    ]
}