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                "authors": "LVK",
                "data": {
                    "urls": {
                        "skymap": "https://gracedb.ligo.org/api/superevents/S250918bi/files/bayestar.multiorder.fits,0",
                        "gracedb": "https://gracedb.ligo.org/superevents/S250918bi/view/"
                    },
                    "event": {
                        "far": 2.246725328820783e-05,
                        "time": "2025-09-18T09:25:40.507Z",
                        "group": "CBC",
                        "search": "AllSky",
                        "area_50": 500.4288359571584,
                        "area_90": 4063.8598301124703,
                        "duration": null,
                        "pipeline": "gstlal",
                        "properties": {
                            "HasNS": 0.0,
                            "HasMassGap": 0.015682288725766987,
                            "HasRemnant": 0.0
                        },
                        "instruments": [
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                            "L1",
                            "V1"
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                        "significant": false,
                        "skymap_hash": "e61026eaaef1a56619b566088caa490e",
                        "classification": {
                            "BBH": 0.04505394925730553,
                            "BNS": 1.3399347844910636e-16,
                            "NSBH": 1.0281301141208051e-14,
                            "Terrestrial": 0.954946050742684
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                        "skymap_version": 0,
                        "central_frequency": null
                    },
                    "alert_type": "PRELIMINARY",
                    "sequence_num": 2,
                    "time_created": "2025-09-18T09:30:43Z",
                    "superevent_id": "S250918bi",
                    "external_coinc": null
                },
                "message_text": "",
                "published": "2025-09-18T09:30:44.587544Z",
                "message_parser": "IGWN Alert Avro Parser v1",
                "retracted": false,
                "created": "2025-09-18T09:30:44.587569Z",
                "modified": "2025-09-18T09:30:44.594313Z"
            }
        }
    ]
}