HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept
{
"count": 257419,
"next": "https://hermes.lco.global/api/v0/messages/?format=api&limit=100&offset=200&ordering=-title",
"previous": "https://hermes.lco.global/api/v0/messages/?format=api&limit=100&ordering=-title",
"results": [
{
"id": 6076,
"topic": "gcn.circular",
"uuid": "6a00d084-7bc3-4e09-aea5-c2ddc6586377",
"title": "Transient EPW20240219aa: Liverpool Telescope non-detection and limiting magnitude",
"submitter": "Hop gcn.circular",
"authors": "A. Bochenek at Liverpool John Moores University <a.m.bochenek@2023.ljmu.ac.uk>",
"data": {
"date": "24/02/23 17:19:29 GMT",
"from": "A. Bochenek at Liverpool John Moores University <a.m.bochenek@2023.ljmu.ac.uk>",
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/35783"
},
"title": "GCN CIRCULAR",
"number": "35783",
"subject": "Transient EPW20240219aa: Liverpool Telescope non-detection and limiting magnitude"
},
"message_text": "A. Bochenek, K-R. Hinds, D. A. Perley (LJMU) report:\n\nWe observed the field of the X-ray transient and possible gamma-ray burst EPW20240219aa (Zhang et al., ATel 16463; Zhang, ATel 16472; Zhang et al., GCN 35773) using the IO:O optical camera on the 2m robotic Liverpool Telescope. We obtained 3x120s exposures with the SDSS-I filter between 2024-02-21 20:05:42 UT and 2024-02-21 20:13:20 UT, approximately 2.5 days after the transient.\n\nThe limiting magnitude of the image is 22.12 mag (AB). Image subtraction was performed relative to Pan-STARRS reference imaging using PSF matching, with the help of PSFEx. No new sources were identified within the 90% confidence error circle.\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/35783.",
"published": "2024-02-23T17:19:47.432064Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2024-02-23T17:19:47.432091Z",
"modified": "2024-02-23T17:19:47.440833Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 6101,
"topic": "gcn.circular",
"uuid": "71ed6042-c480-4c90-be9d-d036fbd0aefa",
"title": "Transient EPW20240219aa: Kp-band imaging observations with NIRES",
"submitter": "Hop gcn.circular",
"authors": "Viraj Karambelkar at Indian Inst of Tech,Bombay <karambelkarvraj21197@gmail.com>",
"data": {
"date": "24/02/26 21:05:11 GMT",
"from": "Viraj Karambelkar at Indian Inst of Tech,Bombay <karambelkarvraj21197@gmail.com>",
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/35808"
},
"title": "GCN CIRCULAR",
"number": "35808",
"subject": "Transient EPW20240219aa: Kp-band imaging observations with NIRES"
},
"message_text": "Viraj Karambelkar (Caltech), Tomas Ahumada (Caltech), Mansi Kasliwal\n(Caltech)\n\nWe observed the location of the X-ray flare EPW20240219aa (Zhang et al.,\nATel #16463; Zhang et al., GCN #35773) in the near-infrared K prime-band\n(Kp) with the NIRES acquisition camera on the Keck II telescope starting\nUTC 2024-02-25T05:12:12.45.\n\nWe obtained four 300 second exposures that covered the locations of the VLA\nradio sources # 1-6 reported in GCN #35788. The Kp-band observations\nreached a depth of ~19.5 mag (Vega). We use an archival Ks-band image of\nthe field from the UKIRT Galactic Plane Survey (Lucas et al. 2008) to\ncalibrate the NIRES images. The depth of the UKIRT image is ~19 mag (Vega).\n\nWe detect sources at the locations of the VLA sources #1, 2, 3 and 6 in the\nNIRES image.\n\nVLA-1 : We detect a source with m_Kp ~ 19 mag (Vega) that is ~0.8 arcsec\noffset from the VLA position reported in GCN #35788. The source is also\nmarginally visible in the archival UKIRT image (which is shallower than the\nnew NIRES image.)\n\nVLA-2 has m_Kp ~ 17 mag (Vega) and appears as an extended source in the\nNIRES as well as archival UKIRT image. There is no substantial variation\nbetween the two epochs.\n\nVLA-3 has m_Kp ~ 19 mag (Vega) and is not detected in the archival image\n(limit ~19 mag).\n\nVLA-4 and VLA-5 are not detected in our images.\n\nVLA-6 is clearly detected as an extended source in both the NIRES and\narchival images. As reported in GCN #35803, this source does not show any\nvariations, and is likely a galaxy unrelated to the transient.\n\nVLA-7 was not covered by our observations.\n\nIn addition to these, we do not detect any new sources in the NIRES\nobservations.\n\nVLA-3 is the most promising source in terms of association with the X-ray\ntransient. We encourage further follow-up.\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/35808.",
"published": "2024-02-26T21:05:22.184354Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2024-02-26T21:05:22.184373Z",
"modified": "2024-02-26T21:05:22.190344Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 6100,
"topic": "gcn.circular",
"uuid": "d87e8318-efea-4302-8063-ee58cb0e9853",
"title": "Transient EPW20240219aa: J-band upper limits from WINTER",
"submitter": "Hop gcn.circular",
"authors": "Viraj Karambelkar at Indian Inst of Tech,Bombay <karambelkarvraj21197@gmail.com>",
"data": {
"date": "24/02/26 21:05:09 GMT",
"from": "Viraj Karambelkar at Indian Inst of Tech,Bombay <karambelkarvraj21197@gmail.com>",
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/35807"
},
"title": "GCN CIRCULAR",
"number": "35807",
"subject": "Transient EPW20240219aa: J-band upper limits from WINTER"
},
"message_text": "Viraj Karambelkar (Caltech), Danielle Frostig (MIT), Robert Stein\n(Caltech), Nathan Lourie (MIT), Geoffrey Mo (MIT), Tomas Ahumada (Caltech),\nRobert Simcoe (MIT), Mansi Kasliwal (Caltech)\n\nWe observed the location of the X-ray flare EPW20240219aa (Zhang et al.,\nATel #16463; Zhang et al., GCN #35773) in the near-infrared J-band with the\nPalomar 1-m telescope, equipped with the 1 square degree WINTER camera\n(Lourie et al. 2020).\n\nOur observations started at UTC 2024-02-25T03:24:23, and covered the 3\narcmin localization region of the X-ray flare. The images were processed\nthrough the WINTER data reduction pipeline implemented using mirar (\nhttps://github.com/winter-telescope/mirar), with image subtraction\nperformed relative to reference images built from the UKIRT Galactic Plane\nSurvey (Lucas et al. 2008).\n\n\nNo new sources are detected to a depth of J = 18.5 mag (AB). Of the 7 radio\nsources detected by the VLA in this region (Ho et al. GCN #35788), source 6\nis detected in both the WINTER and archival UKIRT images, but does not show\nsignificant variability between the two epochs (consistent with that\nreported in Ferro et al. GCN #35803).\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/35807.",
"published": "2024-02-26T21:05:22.170174Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2024-02-26T21:05:22.170195Z",
"modified": "2024-02-26T21:05:22.176979Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 6084,
"topic": "gcn.circular",
"uuid": "2861a19e-246a-4b75-9e60-5eb47ece9433",
"title": "Transient EPW20240219aa: GECKO: LOAO Optical Upper Limits",
"submitter": "Hop gcn.circular",
"authors": "Gregory Paek at Seoul National University <gregorypaek94@gmail.com>",
"data": {
"date": "24/02/25 16:11:06 GMT",
"from": "Gregory Paek at Seoul National University <gregorypaek94@gmail.com>",
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/35791"
},
"title": "GCN CIRCULAR",
"number": "35791",
"subject": "Transient EPW20240219aa: GECKO: LOAO Optical Upper Limits"
},
"message_text": "Gregory S.H. Paek (SNU ARC/SNU), Myungshin Im (SNU ARC/SNU), Chung-Uk Lee (KASI), Seung-Lee Kim (KASI), Hyun-Il Sung (KASI) on behalf of a larger collaboration\n\nWe searched for the optical counterpart of the bright X-ray flare, EPW20240219aa (Zhang et al., ATel #16463; Zhang et al., GCN #35773) with the 1-m class telescope in Lemonsan Optical Astronomy Observatory (LOAO), one of the facilities of the GW EM-Counterpart Korean Observatory (GECKO).\n\nWe observed the localization center provided by the Wide-field X-ray Telescope (WXT) modules aboard the Einstein Probe (EP) mission at RA, Dec = 80.016 deg, 25.541 deg, but could not find any transient within the field of view of LOAO (28.1'x28.1'). We calibrated flux with the PS1 catalog and used an AB magnitude system.\n\n------\nFilter Date-obs[UT] Exp.time[s] Depth(5sigma)\nR 2024-02-23T02:46:34 60*30 20.562\n\nWe thank the LOAO operator for performing the observation. Gravitational-wave Electromagnetic-wave Counterpart Korean Observatory (GECKO) is a network of 10+ 0.5m to 1m class telescopes over the world.\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/35791.",
"published": "2024-02-25T16:11:14.386695Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2024-02-25T16:11:14.386730Z",
"modified": "2024-02-25T16:11:14.393225Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 6083,
"topic": "gcn.circular",
"uuid": "cde62926-10ac-42ab-b857-7abb38029844",
"title": "Transient EPW20240219aa: 7DT Optical Upper Limits",
"submitter": "Hop gcn.circular",
"authors": "Gregory Paek at Seoul National University <gregorypaek94@gmail.com>",
"data": {
"date": "24/02/25 16:06:42 GMT",
"from": "Gregory Paek at Seoul National University <gregorypaek94@gmail.com>",
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/35790"
},
"title": "GCN CIRCULAR",
"number": "35790",
"subject": "Transient EPW20240219aa: 7DT Optical Upper Limits"
},
"message_text": "Gregory S.H. Paek (SNU ARC/SNU), Myungshin Im (SNU ARC/SNU), Hyeonho Choi (SNU ARC/SNU), Seo-Won Chang (SNU ARC/SNU), and Ji Hoon Kim (SNU ARC/SNU) report on behalf of the 7-Dimensional Telescope collaboration\n\nWe searched for the optical counterpart of the bright X-ray flare, EPW20240219aa (Zhang et al., ATel #16463; Zhang et al., GCN #35773) using the 7-Dimensional Telescopes (7DT). Approximately 3.8 days following the initial detection (2024-02-19T06:23:27 UTC), we targeted the localization center provided by the Wide-field X-ray Telescope (WXT) modules aboard the Einstein Probe (EP) mission at RA, Dec = 80.016 deg, 25.541 deg with an uncertainty of 3 arcmin. Observations were made with nine 7DT units in medium-band filters, denoted as m400, m425, then through m825, in which the numeric values indicate their central wavelengths in nanometers. Each filter has a bandwidth of 25nm. In the preliminary result, no significant transient event was identified. Photometric flux calibration was performed using synthetic photometries derived from the Gaia DR3 XP catalog (Gaia Collaboration et al. 2022) within the AB magnitude system. Observations at low altitudes resulted in suboptimal conditions, potentially limiting our search sensitivity.\n------\nFilter Date-obs[UT] Exp.time[s] Depth(5sigma)\nm400 2024-02-23T01:42:11.629 900 18.166\nm425 2024-02-23T02:00:22.606 900 18.338\nm450 2024-02-23T01:42:53.577 900 18.330\nm475 2024-02-23T02:00:47.055 900 18.447\nm500 2024-02-23T01:42:28.304 900 18.597\nm525 2024-02-23T01:59:53.492 900 18.678\nm550 2024-02-23T01:48:38.922 900 18.379\nm575 2024-02-23T02:05:57.204 900 18.486\nm600 2024-02-23T01:44:36.663 900 17.712\nm625 2024-02-23T02:01:47.678 900 18.365\nm650 2024-02-23T01:43:27.232 900 18.110\nm675 2024-02-23T02:00:54.580 900 18.425\nm700 2024-02-23T01:43:15.587 900 17.894\nm725 2024-02-23T02:00:44.848 900 18.029\nm750 2024-02-23T01:43:56.489 900 17.154\nm775 2024-02-23T02:01:45.824 900 17.641\nm800 2024-02-23T01:47:43.573 900 17.177\nm825 2024-02-23T02:05:38.685 900 17.014\n\nThe 7-Dimensional Telescope (7DT), comprising 20 wide-field telescopes equipped with 40 medium-bandwidth (~25nm) filters located in Chile, aims to detect optical counterparts of GW sources and conduct the 7-Dimensional Sky Survey (7DS) of the Southern Hemisphere. Further information about the 7DT is available at http://gwuniverse.snu.ac.kr/.\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/35790.",
"published": "2024-02-25T16:07:01.548004Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2024-02-25T16:07:01.548030Z",
"modified": "2024-02-25T16:07:01.556436Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 6314,
"topic": "gcn.circular",
"uuid": "120ca79a-1e08-4cf8-9eab-16369f85b445",
"title": "Transient EP240315a: J-band observations of AT2024eju with WIRC",
"submitter": "Hop gcn.circular",
"authors": "nearley@caltech.edu",
"data": {
"date": "24/04/01 20:56:49 GMT",
"from": "nearley@caltech.edu",
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/36008"
},
"title": "GCN CIRCULAR",
"number": "36008",
"subject": "Transient EP240315a: J-band observations of AT2024eju with WIRC"
},
"message_text": "Nicholas Earley (Caltech), Viraj Karambelkar (Caltech), Christoffer Fremling (Caltech), Mansi Kasliwal (Caltech):\n\nWe observed the location of the optical transient AT2024eju (Srivastav et al., GCN 35932) associated with the fast X-ray transient EP240315a (Zhang et al., GCN 35931; Chen et al. GCN 35951) in the near-infrared J-band with the Wide-Field Infrared Camera (WIRC, Wilson et al. 2003) on the 200-in Hale Telescope at Palomar Observatory.\n\nObservations began at UTC 2024-03-20T04:27:45.313, roughly 4 days after detection in the X-ray. The observations consisted of a dithered set of 45 sec exposures for a total of ~30 minutes.\n\nWe detect a faint source at the location of AT2024eju with m_J ~ 22.5 mag (AB).\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/36008.",
"published": "2024-04-01T20:57:12.379042Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2024-04-01T20:57:12.379061Z",
"modified": "2024-04-01T20:57:12.387005Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3609,
"topic": "gcn.circular",
"uuid": "0fc9d68c-57a7-4b88-a1cf-19dfeec51450",
"title": "transient AT2023sva: radio observations with AMI-LA",
"submitter": "Hop gcn.circular",
"authors": "Lauren Rhodes at Oxford <lauren.rhodes@physics.ox.ac.uk>",
"data": {
"date": "23/10/04 13:14:59 GMT",
"from": "Lauren Rhodes at Oxford <lauren.rhodes@physics.ox.ac.uk>",
"urls": {
"gcn": "https://gcn.nasa.gov/circulars/34796"
},
"title": "GCN CIRCULAR",
"number": "34796",
"subject": "transient AT2023sva: radio observations with AMI-LA"
},
"message_text": "Lauren Rhodes, Rob Fender (Oxford), Dave Green, Dave Titterington (Cambridge) report:\n\nWe observed the field of the afterglow candidate AT2023sva (GCN 34730) with the Arcminute Microkelvin Imager Large-Array (AMI-LA) at 15.5 GHz beginning at UT 02:08:35 on 19-Aug-2023 for a total of 4 hours. The flux standard 3c286 was used to calibrate the bandpass response and flux scale of the AMI-LA and J0017+8135 was used as an interleaved complex gain calibrator.\n\nWe detect a unresolved source at a position consistent with the one reported in GCN 34394 with a (preliminary) peak flux density of 220uJy/beam. The rms noise in the field is 40uJy/beam. Further observations are planned.\n\nWe thank the staff at the Mullard Radio Astronomy Observatory for carrying out these observations and operating the AMI-LA.\n\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34796.",
"published": "2023-10-04T13:15:08.996036Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-10-04T13:15:08.996057Z",
"modified": "2023-10-04T13:15:09.033176Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3160,
"topic": "gcn.circular",
"uuid": "6d47f130-280c-47d0-aae6-983a7f293e68",
"title": "transient AT2023sva: imaging and spectroscopic observations from MISTRAL at Observatoire de Haute-Provence",
"submitter": "Hop gcn.circular",
"authors": "christophe.adami@lam.fr",
"data": {
"date": "23/09/20 16:30:19 GMT",
"from": "christophe.adami@lam.fr",
"title": "GCN CIRCULAR",
"number": "34744",
"subject": "transient AT2023sva: imaging and spectroscopic observations from MISTRAL at Observatoire de Haute-Provence"
},
"message_text": "K. Parra-Ramos (LAM), B. Schneider (MIT), C. Adami, S. Basa (LAM), T. Adami (ENS Paris-Saclay), J. T. Palmerio, A. Saccardi, S. D. Vergani, (GEPI, Obs. de Paris), S. Antier, A. de Ugarte Postigo (OCA), \nE. Le Floc'h, D. Götz, F. Schüssler, D. Turpin (CEA-Saclay), report, on behalf of a larger collaboration:\n\nWe observed the field of AT2023sva (Vail et al. GCN 34730 and de Ugarte Postigo et al. 34740) using the MISTRAL spectro-imager of Observatoire de Haute Provence (OHP) in imaging and spectroscopic (blue setting) modes. \nWe obtained 1x300s and 1x600s exposure in the r'-band and 2x600s on the g'-band with respective mid-epochs of 2023 09 19 01:05 UT, and 2023 09 19 01:29 UT\n\nWe derive the following photometry, calibrated against the Pan-STARRS catalog and not corrected for Galactic dust reddening:\n\n2023 09 19 01:05 UT r' = 20.96 +/- 0.10\n2023 09 19 01:29 UT g' = 21.36 +/- 0.10\n\nWe finally obtained 1h30 of exposure (3x30min) in spectroscopic mode, using the blue setting of MISTRAL. We clearly detect the continuum associated with the transient emission, leading to a redshift upper limit (z<3.5) \nconsistent with the redshift determination obtained by the GTC (de Ugarte Postigo et al., GCN 34740). The signal to noise in the final combined spectrum is however not sufficient to securely identify any absorption line. \n\nWe acknowledge the excellent support from Jerome Schmitt, Stephane Favard and Jean Balcaen (Observatoire de Haute Provence).\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34744.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MjI3NDIyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.s9Bb0b69_82HCCVPptry5NbDXJ4sVpp7DNayicOpvJc\n\n",
"published": "2023-09-20T16:30:27.295569Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-20T16:30:27.295588Z",
"modified": "2023-09-20T16:30:27.303030Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3416,
"topic": "gcn.circular",
"uuid": "61e4d259-9d20-4fbb-a89d-88401a11537c",
"title": "transient AT2023sva: A Binary Driven Hypernova with a possible associated supernova",
"submitter": "Hop gcn.circular",
"authors": "Remo Ruffini at ICRA <ruffini@icra.it>",
"data": {
"date": "23/09/28 16:05:44 GMT",
"from": "Remo Ruffini at ICRA <ruffini@icra.it>",
"urls": {
"gcn": "https://gcn.nasa.gov/circulars/34779"
},
"title": "GCN CIRCULAR",
"number": "34779",
"subject": "transient AT2023sva: A Binary Driven Hypernova with a possible associated supernova"
},
"message_text": "R. Ruffini, Y. Aimuratov, L. Becerra, C.L. Bianco, C. Cherubini, S. Filippi, Liang Li, R. Moradi, F. Rastegar Nia, J.A. Rueda, N. Sahakyan, Y. Wang, S.S. Xue, S.R. Zhang, on behalf of the ICRANet team, report:\n\n\nFollowing the BdHN classification [Aimuratov, et al., ApJ 955 (2023) 93] and the determination of the redshift z=2.2 of transient AT2023sva (de Ugarte Postigo, et al., GCN 34740), from the energetics evaluated by Liang Li (2023) from Fermi GBM data in (2.15+/-0.13)x10^{52} erg (see attached figure), we conclude that the source is a BdHN II (GRB230916A).\n\nWe Propose to look with the James Webb Space Telescope the appearance of the associated supernova (SN) on October 31 (+/-1 day), in order to extend the GRB-SN connection in the range 1<z<3 and verify the standard candle nature of SNe Ib/c.\n\nFigure: http://www.icranet.org/documents/GRB230916A.pdf\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34779.",
"published": "2023-09-28T20:53:59.682628Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-28T20:53:59.682647Z",
"modified": "2023-09-28T20:53:59.694435Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3370,
"topic": "gcn.circular",
"uuid": "6040d110-52f3-40df-a9a4-84572ea9228b",
"title": "Title: LIGO/Virgo/KAGRA S230919bj: Upper limits from Swift/BAT-GUANO",
"submitter": "Hop gcn.circular",
"authors": "Samuele Ronchini at PSU <sjs8171@psu.edu>",
"data": {
"date": "23/09/25 14:58:46 GMT",
"from": "Samuele Ronchini at PSU <sjs8171@psu.edu>",
"title": "GCN CIRCULAR",
"number": "34766",
"subject": "Title: LIGO/Virgo/KAGRA S230919bj: Upper limits from Swift/BAT-GUANO"
},
"message_text": "Samuele Ronchini (PSU), James DeLaunay (U Alabama), Jamie A. Kennea (PSU), Tyler Parsotan (NASA GSFC), Aaron Tohuvavohu (U Toronto), Gayathri Raman (PSU) report:\n\nSwift/BAT was observing 95.2% of the GW localization probability (Bilby.multiorder.fits) at merger time. A fraction 0.6 % of the GW localization posterior is contained inside the BAT coded FoV.\n\nThe LVK notice, distributed in near real-time, triggered the Swift Mission Operations Center operated Gamma-ray Urgent Archiver for Novel Opportunities (GUANO; Tohuvavohu et al. 2020, ApJ, 900, 1).\n\nUpon trigger by this notice, GUANO sent a command to the Swift Burst Alert Telescope (BAT) to save 200 seconds of BAT event-mode data from [-50,+150] seconds around the time of the burst. All the requested event mode data was delivered to the ground.\n\nUsing the NITRATES analysis (DeLaunay + Tohuvavohu 2022, ApJ, 941, 169), we searched for emission on 8 timescales from 0.128s to 16.384s in the interval [-20,+20] seconds around the merger time. We find no evidence for a signal, and derive the following upper limits.\n\nWe quote the 5-sigma flux upper limits in the 15-350 keV band, weighted over the GW localization, for four spectral templates (soft, normal, and hard GRB-like templates described in [arXiv:1612.02395], and spectral shape from GRB170817A [arXiv:1710.05446]) and for four time bins.\nIn units of 10^-7 erg/s/cm^2:\n\ntime_bin (s) soft normal hard GRB170817\n------------------------------------\n0.256 9.33 6.77 6.33 7.22\n1.024 4.75 3.45 3.22 3.68\n4.096 2.53 1.84 1.72 1.96\n16.38 1.54 1.12 1.04 1.19\n\n\nThe upper limits as function of sky position are plotted here, alongside the GW localization:\nhttps://doi.org/10.5281/zenodo.8374493\nThe solid and dashed lines indicate the 90% and 50% GW contour levels, respectively.\n\nThe corresponding fits file can be found here:\nhttps://doi.org/10.5281/zenodo.8374504\n\n\nGUANO is a fully autonomous, extremely low latency, spacecraft\ncommanding pipeline designed for targeted recovery of BAT event mode\ndata around the times of compelling astrophysical events to enable\nmore sensitive GRB searches.\n\nA live reporting of Swift/BAT event data recovered by GUANO can be\nfound at: https://www.swift.psu.edu/guano/\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34766.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1NjUzOTMxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.gyAZG9qKWpJrPdwnWAOY6VM95BryPUIi9Yis8jbeYno\n\n",
"published": "2023-09-25T14:59:04.726451Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-25T14:59:04.726470Z",
"modified": "2023-09-25T14:59:04.732764Z",
"nonlocalizedevents": [
{
"event_id": "S230919b"
}
],
"targets": []
},
{
"id": 1193138,
"topic": "gcn.circulars",
"uuid": "3d8ab14d-091f-4192-85cd-6ba359dc703e",
"title": "The SVOM alert sb25072103 is not due to a GRB, but to a new galactic transient SVOM J195836+32283.",
"submitter": "Diego Gotz at CEA <diego.gotz@cea.fr>",
"authors": "Diego Gotz at CEA <diego.gotz@cea.fr>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41131"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"eventId": "sb25072103",
"subject": "The SVOM alert sb25072103 is not due to a GRB, but to a new galactic transient SVOM J195836+32283.",
"createdOn": 1753117216765,
"submitter": "Diego Gotz at CEA <diego.gotz@cea.fr>",
"circularId": 41131,
"submittedHow": "web"
},
"message_text": "D. Götz, N. Dagoneau, A. Saccardi (CEA), D. Zhao, Y. Ma, L. Xin (NAOC), J.-L. Atteia (IRAP) on behalf of the SVOM collaboration report:\n\nThe SVOM alert sb25072103 (08:43:10 UTC) is not due to a GRB, but most probably to a new galactic transient source. The ECLAIRs alert was initially identified as a trigger from the known galactic High Mass X-ray Binary, 4U 1954+31. SVOM slewed to the source location, and, due to Earth occultation, MXT and VT could not observe the field right away.\n\nAs soon as MXT started the observation, about one hour later, at 09:32:37 UTC, its on board software detected an uncatalogued source in its field of view, not consistent with the position of 4U 1954+31. The MXT observation continued until 11:47:43 UTC.\n\nSubsequent analysis of the entire MXT X-band data showed that the source was not fading and, on the contrary, increased its flux by a factor about two over the entire duration of the observation. In addition the source presents a thermal spectrum, compatible with a black body of temperature ~0.2 keV. Based on these properties and on its position in the galactic plane (l=69.03, b= 1.6) we can exclude that this alert is due to a GRB, and we propose to classify this source as a new galactic transient, SVOM J195836+32283.\n\nThe J2000 X-ray coordinates are:\n\nR.A. = 19h 58m 36s\nDec. = +32° 28’ 20”\n\nwith a 90% c.l. error radius of 30 arc sec (18 arc sec of statistical error).\n\nThe MXT error region was in the VT field of view during the SVOM second orbit. A faint uncatalogued optical source was detected within the MXT error region in VT_R band with a brightness of 22.2+/-0.4 mag, compared to the PanSTARRS images at the following J2000 coordinates\n\nR.A. = 19h 58m 36.29s\nDec. = +32° 28’ 25.7”\n\nwith an error of 0.5 arc sec.\n\nThe VT images were obtained between 11:11:09 and 11:42:49 UTC with an effective exposure time of 20x100 seconds. The VT magnitude is not corrected for the Galactic extinction on the line of sight. \n\nThis source lies at 6 arc seconds from the MXT position, and we suggest that it might be the counterpart of the X-ray source.\n\nFollow-up observations at other wavelengths are encouraged.\n\nThe Space-based multi-band astronomical Variable Objects Monitor (SVOM) is a China-France joint mission led by the Chinese National Space Administration (CNSA), French Space Agency (CNES), and the Chinese Academy of Sciences (CAS), which is dedicated to observing gamma-ray bursts and other transient phenomena in the energetic universe. SVOM/ECLAIRs was developed jointly by CNES, CEA-IRFU, CNRS-IRAP, CNRS-APC. SVOM/GRM was developed by the Institute of High Energy Physics (IHEP) of CAS. SVOM/MXT was developed jointly by CNES, CEA-IRFU, CNRS-IJCLab, University of Leicester, MPE. SVOM/VT was jointly developed by Xi'an Institute of Optics and Precision Mechanics (XIOPM), CAS and National astronomical observatories (NAOC), CAS.\n",
"published": "2025-07-21T18:04:24.697131Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-07-21T18:04:24.697155Z",
"modified": "2025-07-21T18:04:24.702414Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 140714,
"topic": "gcn.circulars",
"uuid": "2be4fc90-730f-4c1b-a3d5-157622a26b7b",
"title": "The probability of observing GRB 221009A at z = 0.151",
"submitter": "Jean-Luc Atteia at IRAP <jean-luc.atteia@irap.omp.eu>",
"authors": "Jean-Luc Atteia at IRAP <jean-luc.atteia@irap.omp.eu>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/32793"
},
"email": "jean-luc.atteia@irap.omp.eu",
"$schema": "https://gcn.nasa.gov/schema/v4.1.0/gcn/circulars.schema.json",
"bibcode": "2022GCN.32793....1A",
"subject": "The probability of observing GRB 221009A at z = 0.151",
"createdOn": 1666104452000,
"submitter": "Jean-Luc Atteia at IRAP <jean-luc.atteia@irap.omp.eu>",
"circularId": 32793
},
"message_text": "The prompt emission of the extraordinarily bright GRB 221009A was detected in space by Swift (Dichiara et al. GCNC 32632, Krimm et al. 32688), Fermi (Veres et al. GCNC 32636, Bissaldi et al. GCNC 32637, Lesage et al. GCNC 32642, Pillera et al. GCNC 32658, Omodei et al. GCNC 32760), AGILE (Ursi et al. GCNC 32650, Piano et al. GCNC 32657), INTEGRAL (Gotz et al. GCNC 32660), Solar Orbiter (Xiao et al. GCNC 32661), SRG (Lapshov et al. GCNC 32663), Konus (Frederiks et al. GCNC 32668), GRBAlpha (Ripa \net al. GCNC 32685), STPSat-6 (Mitchell et al. GCNC 32746), HEBS (Liu et al. GCNC 32751). Various estimates of its prompt isotropic energy ranks it among the most energetic GRBs (Cenko et al. 2011, Atteia et al. 2017):\nGotz et al. GCNC 32660 -���������� Eiso = 8e53 ergs in [75 keV 1 MeV] ;\nFrederiks et al. GCNC 32668 - Eiso = 3e54 ergs in [20 keV - 10 MeV ?] ;\nKann et al. GCNC 32762 -���������� Eiso = 6e54 ergs in [0.1 keV - 100 MeV] ;\n\nWe discuss here the chance to observe such an energetic GRB at redshift z = 0.151 (de Ugarte Postigo GCNC 32648, Castro-Tirado et al. GCNC 32686), considering the rate of such extremely energetic GRBs observed at higher redshifts.\n\nConsidering a flat cosmology with H0 = 67.4 km/s/Mpc and Omegam = 0.315 (Planck Collaboration et al. 2020), we extrapolate the rate of ���4 extremely energetic GRBs per year derived by Atteia et al. (2017) in the redshift range [1,5], to the volume of the nearby universe enclosed within z = 0.151.\n\n- Assuming a constant GRB formation rate, we obtain 1 extremely energetic GRB per ~130 yr.\n- Assuming the GRB formation rate of Palmerio & Daigne (2021), we obtain 1 extremely energetic GRB per ~520 yr.\n\nWe conclude that there is a ~10% probability to observe an event like GRB 221009A about 50 years after the discovery of the first GRB.\n\nBibliography :\n- Cenko, S. B., Frail, D. A., Harrison, F. A., et al. 2011, ApJ, 732, 29\n- Atteia, J.-L., Heussaff, V., Dezalay, J.-P., et al. 2017, ApJ, 837, 119\n- Palmerio, J.T. & Daigne, F. 2021, A&A, 649, 166\n- Planck Collaboration, Aghanim, N., Akrami, Y., et al. 2020, A&A, 641, A6",
"published": "2024-11-04T08:09:45.145632Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2024-11-04T08:09:45.145646Z",
"modified": "2024-11-04T08:09:45.152394Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 4109,
"topic": "gcn.circular",
"uuid": "4a7df875-2b60-446c-8d4c-812377904fb0",
"title": "The photometry of the transient in Messier 31 field: GMG observation",
"submitter": "Hop gcn.circular",
"authors": "Rui-Zhi Li at Yunnan Astronomical Observatory, CAS <liruizhi@ynao.ac.cn>",
"data": {
"date": "23/10/24 01:51:10 GMT",
"from": "Rui-Zhi Li at Yunnan Astronomical Observatory, CAS <liruizhi@ynao.ac.cn>",
"urls": {
"gcn": "https://gcn.nasa.gov/circulars/34874"
},
"title": "GCN CIRCULAR",
"number": "34874",
"subject": "The photometry of the transient in Messier 31 field: GMG observation"
},
"message_text": "R.-Z. Li, B.-T. Wang, J. Mao, X.-L. Zhang, J.-J. Zhang, and J.-M. Bai (YNAO) report:\n\nWe followed the GCN circular on the discovery of an optical transient as a new blazar candidate in the Messier 31 field (Gianluca et al. GCN 34819). We observed the transient with the 2.4-meter optical telescope at Gao-Mei-Gu (GMG) station of Yunnan Observatories. The preliminary results are shown as\n----------------------------------------------------\nUT\t\t\t\tfilter\tmag\n----------------------------------------------------\n2023-10-17T14:16:13.243\t\tB\t20.14 ± 0.12\n2023-10-17T14:19:54.225\t\tV\t17.80 ± 0.09\n2023-10-17T14:23:29.236\t\tR\t18.44 ± 0.06\n2023-10-18T16:12:25.346\t\tB\t20.68 ± 0.15\n2023-10-18T16:16:00.356\t\tV\t18.13 ± 0.10\n2023-10-18T16:19:35.370\t\tR\t18.89 ± 0.07\n2023-10-19T15:37:25.492\t\tB\t20.23 ± 0.10\n2023-10-19T15:41:07.493\t\tV\t17.62 ± 0.06\n2023-10-19T15:45:03.473\t\tR\t18.38 ± 0.04\n2023-10-20T15:17:30.676\t\tB\t20.24 ± 0.13\n2023-10-20T15:21:09.646\t\tV\t17.71 ± 0.08\n2023-10-20T15:24:49.624\t\tR\t18.41 ± 0.05\n2023-10-21T15:12:50.704\t\tB\t19.83 ± 0.15\n2023-10-21T15:16:30.683\t\tV\t17.77 ± 0.09\n2023-10-21T15:20:08.724\t\tR\t18.26 ± 0.06\n2023-10-22T14:27:55.829\t\tB\t20.54 ± 0.16\n2023-10-22T14:31:36.818\t\tV\t17.87 ± 0.10\n2023-10-22T14:35:17.806\t\tR\t18.90 ± 0.06\n----------------------------------------------------\nThe further identification is ongoing.\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34874.",
"published": "2023-10-24T01:51:25.338356Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-10-24T01:51:25.338377Z",
"modified": "2023-10-24T01:51:25.347729Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 77316,
"topic": "gcn.circular",
"uuid": "7ef00407-2b98-48a0-a9fe-45efdfc5e381",
"title": "The first three GRBs detected by SVOM: X-ray Upper Limits from EP-WXT",
"submitter": "Hop gcn.circular",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"date": "24/07/03 15:23:07 GMT",
"from": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/36811"
},
"title": "GCN CIRCULAR",
"number": "36811",
"subject": "The first three GRBs detected by SVOM: X-ray Upper Limits from EP-WXT"
},
"message_text": "C. Y. Dai (NJU), J. Q. Peng, Q. C. Shui (IHEP, CAS), Y. L. Wang, C. C. Jin, Z. X. Ling, W. Yuan, Y. Liu, C. Zhang, H. Q. Cheng, C. Z. Cui, D. W. Fan, H. B. Hu, J. W. Hu, M. H. Huang, D. Y. Li, H. Y. Liu, M. J. Liu, Z. Z. Lv, T. Y. Lian, X. Mao, H. W. Pan, X. Pan, H. Sun, W. X. Wang, Y. L. Wang, S. X. Wen, Q. Y. Wu, X. P. Xu, Y. F. Xu, H. N. Yang, M. Zhang, W. D. Zhang, W. J. Zhang, Z. Zhang, D. H. Zhao (NAOC, CAS), Y. Chen, S. M. Jia, S. N. Zhang (IHEP, CAS), E. Kuulkers, A. Santovincenzo (ESA), P. O'Brien (Univ. of Leicester), K. Nandra, A. Rau (MPE), B. Cordier (CEA) on behalf of the Einstein Probe team \n \nWe report on the X-ray upper limits from the observations of the Wide-field X-ray Telescope (WXT) on board the Einstein Probe (EP) mission, for the first three GRBs detected by SVOM (Xiong et al. GCN #36805), GRB 240627B, GRB 240629A and GRB 240702A. \n \nAmong the three GRBs, the position of GRB 240702A has not been covered by the field-of-view of WXT after its detection by SVOM. Both GRB 240627B and GRB 240629A were serendipitously covered by the field-of-view of WXT multiple times after their detections by SVOM, but no new X-ray sources were found within 3 degrees of their positions.\n\nThe flux upper limits at the 5-sigma confidence level for GRB 240627B and GRB 240629A are detailed as follows. \n\nSource | R.A | Dec. ï½ Obs. start time | Exposure (s) | Upper limit (erg/s/cm2) \n------------------------------------------------------------------------------------------------------\nGRB 240627B | 215.25 | 48.52 | 2024-06-27T20:21:43.000 | 586 | 4.43e-11\nGRB 240627B | 215.25 | 48.52 | 2024-06-27T23:23:27.000 | 1233 | 2.90e-11 \nGRB 240629A | 314.4 | -35.7 | 2024-06-30T00:11:05.000 | 6429 | 1.18e-11\nGRB 240629A | 314.4 | -35.7 | 2024-06-30T04:59:38.000 | 54140 | 3.93e-12\n------------------------------------------------------------------------------------------------------\n \nThe above observations were made with the WXT instrument during the commissioning phase of EP. Launched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics). EP is a mission of the Chinese Academy of Sciences in collaboration with ESA, MPE and CNES.\n \n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/36811.",
"published": "2024-07-03T15:23:17.469512Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2024-07-03T15:23:17.469530Z",
"modified": "2024-07-03T15:23:17.476045Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 76631,
"topic": "gcn.circular",
"uuid": "a5794cd6-5210-44ae-bfe5-a80449a89458",
"title": "The first three GRBs detected by SVOM: GRB 240627B, GRB 240629A and GRB 240702A",
"submitter": "Hop gcn.circular",
"authors": "Shaolin Xiong at IHEP <xiongsl@ihep.ac.cn>",
"data": {
"date": "24/07/03 03:46:41 GMT",
"from": "Shaolin Xiong at IHEP <xiongsl@ihep.ac.cn>",
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/36805"
},
"title": "GCN CIRCULAR",
"number": "36805",
"subject": "The first three GRBs detected by SVOM: GRB 240627B, GRB 240629A and GRB 240702A"
},
"message_text": "SVOM/GRM team: Yong-Wei Dong, Jiang-Tao Liu, Shi-Jie Zheng, Wen-Jun Tan, Jian-Chao Sun, Chen-Wei Wang, Jiang He, Min Gao, Hao-Xuan Guo, Yue Huang, Lu Li, Yong-Ye Li, Hong-Wei Liu, Xin Liu, Hao-Li Shi, Li-Ming Song, You-Li Tuo, Hao-Xi Wang, Jin Wang, Jin-Zhou Wang, Ping Wang, Rui-Jie Wang, Yu-Xi Wang, Bo-Bing Wu, Shao-Lin Xiong, Jian-Ying Ye, Yi-Tao Yin, Wen-Hui Yu, Fan Zhang, Li Zhang, Peng Zhang, Shuang-Nan Zhang, Wen-Long Zhang, Yan-Ting Zhang, Shu-Min Zhao, Xiao-Yun Zhao, Chao Zheng (IHEP), Maria-Grazia Bernardini (LUPM/INAF-OAB), Laurent Bouchet (IRAP), David Corre (CEA), Patrick Maeght (LUPM), Frédéric Piron (LUPM), Jingwei Wang (IAP)\n\nSVOM JSWG: Jian-Yan Wei (NAOC), Bertrand Cordier (CEA), Shuang-Nan Zhang (IHEP), Stéphane Basa (LAM), JeanLuc Attéia (IRAP), Arnaud Claret (CEA), Zi-Gao Dai (USTC), Frédéric Daigne (IAP), Jin-Song Deng (NAOC), Andrea Goldwurm (APC), Diego Götz (CEA), Xu-Hui Han (NAOC), Cyril Lachaud (APC), En-Wei Liang (GXU), Yu-Lei Qiu (NAOC), Susanna Vergani (Obs.Paris), Jing Wang (NAOC), Chao Wu (NAOC), Li-Ping Xin (NAOC), Bing Zhang (UNLV)\n\nreport on behalf of the SVOM team:\n\nDuring the commissioning phase of SVOM which was launched on June 22, 2024 from the Xichang Satellite Launching Center, China, the Gamma-Ray burst Monitor (GRM), as one of the four multi-wavelength telescopes on-board SVOM, detected three long gamma-ray bursts (GRBs), GRB 240627B at 2024-06-27T20:08:11.750 UTC (T0), GRB 240629A at 2024-06-29T16:53:53.000 UTC (T0) and GRB 240702A at 2024-07-02T21:14:50.700 UTC (T0), with on-ground blind search using event-by-event data downloaded through the X-band ground station. The light curves of GRB 240627B were also successfully downloaded through the VHF system with low latency owing to an in-flight trigger just about 50 s after this burst. Although the calibration is ongoing, the preliminary GRM light curves are well consistent with the Fermi/GBM and GECAM-C observations. The automatic in-flight trigger strategy of GRM is under commissioning. \n\nThe GRB 240627B light curves can be found here:\nhttp://www.bursthub.cn//admin/static/svgrb240627B.png\n\nThe GRB 240629A light curves can be found here:\nhttp://www.bursthub.cn//admin/static/svgrb240629A.png\n\nThe GRB 240702A light curves can be found here:\nhttp://www.bursthub.cn//admin/static/svgrb240702A.png\n\nWe note that these are the first three GRBs detected by SVOM. More GRBs are expected to be detected by SVOM as other instruments are gradually turned on according to the operation plans.\n\nThe Space Variable Objects Monitor (SVOM) is a China-France joint mission led by the Chinese National Space Administration (CNSA, China), National Center for Space Studies (CNES, France) and the Chinese Academy of Sciences (CAS, China), which is dedicated to observing gamma-ray bursts and other transient phenomena in the energetic universe. GRM is developed by the Institute of High Energy Physics (IHEP) of CAS.\n\nThe SVOM point of contact for these bursts is: Shao-Lin Xiong (IHEP)(xiongsl@ihep.ac.cn)\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/36805.",
"published": "2024-07-03T03:46:52.427678Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2024-07-03T03:46:52.427708Z",
"modified": "2024-07-03T03:46:52.434389Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1925,
"topic": "gcn.circular",
"uuid": "b707c027-dee7-4038-b44c-478caf13e4af",
"title": "The Fermi GBM Trigger 713134237 / 230807868 is not associated with LIGO/Virgo/KAGRA S230807f.",
"submitter": "Hop gcn.circular",
"authors": "Sarah Dalessi at UAH <sd0104@uah.edu>",
"data": {
"date": "23/08/08 18:26:24 GMT",
"from": "Sarah Dalessi at UAH <sd0104@uah.edu>",
"title": "GCN CIRCULAR",
"number": "34372",
"subject": "The Fermi GBM Trigger 713134237 / 230807868 is not associated with LIGO/Virgo/KAGRA S230807f."
},
"message_text": "S. Dalessi (UAH) reports on behalf of the Fermi-GBM Team:\n\nAt 20:50:32.62 on 07 August 2023, the Fermi Gamma-ray Burst Monitor triggered onboard to the event labeled as 713134237 / 230807868 this trigger occurred 15s before the LVK Event S230807f (GCN 34360).\n\nThe trigger is likely due to a solar flare and therefore is not associated to S230807f.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxNTE5MTkwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.sxBQ2RYDTRPTJHjm4O07QmufhabpGpDqyy7ospIzRjM\n\n",
"published": "2023-08-08T18:26:35.071762Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-08T18:26:35.071833Z",
"modified": "2023-08-08T18:26:35.081633Z",
"nonlocalizedevents": [
{
"event_id": "S230807f"
}
],
"targets": []
},
{
"id": 5135,
"topic": "gcn.circular",
"uuid": "7dc3083b-c66d-4896-a01b-69531bb026cc",
"title": "The Fermi GBM team reports the detection of a likely SHORT GRB",
"submitter": "Hop gcn.circular",
"authors": "Bagrat Mailyan at Florida Tech <mbagrat@gmail.com>",
"data": {
"date": "23/12/03 22:30:35 GMT",
"from": "Bagrat Mailyan at Florida Tech <mbagrat@gmail.com>",
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/35253"
},
"title": "GCN CIRCULAR",
"number": "35253",
"subject": "The Fermi GBM team reports the detection of a likely SHORT GRB"
},
"message_text": "At 19:56:04 UT on 3 Dec 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231203B (trigger 723326169/ 231203831).\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 197.3, Dec = +42.54 (J2000 degrees, equivalent to J2000 13h 09m, 42d 32'), with a statistical uncertainty of 15.9 degrees.\nThe angle from the Fermi LAT boresight is 17.0 degrees.\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231203831/quicklook/glg_skymap_all_bn231203831.png\nThe HEALPix FITS file, including the estimated localization systematic, can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231203831/quicklook/glg_healpix_all_bn231203831.fit\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231203831/quicklook/glg_lc_medres34_bn231203831.gif\n\n\n\n\n\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/35253.",
"published": "2023-12-03T22:30:50.390712Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-12-03T22:30:50.390742Z",
"modified": "2023-12-03T22:30:50.399143Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 115513,
"topic": "gcn.circular",
"uuid": "e3bb0348-032d-408b-84bb-af549c276ae4",
"title": "The EP-WXT triggers 01709047257 and 01709047278 are not real sources",
"submitter": "Hop gcn.circular",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"date": "24/09/16 13:01:33 GMT",
"from": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/37523"
},
"title": "GCN CIRCULAR",
"number": "37523",
"subject": "The EP-WXT triggers 01709047257 and 01709047278 are not real sources"
},
"message_text": "H. Q. Cheng (NAOC, CAS), Y.-H. I. Yin (NJU), S. F. Zhu (USTC), Q. C. Liu (THU), W. D. Zhang (NAOC, CAS) on behalf of the Einstein Probe (EP) team\n\nFurther analysis of the late arrived telemetry data verifies that the EP-WXT on-board trigger 01709047257 at 2024-09-15T14:21:24.501 UTC is not a real source.\n\nFurther analysis of the late arrived telemetry data verifies that the trigger 01709047278 at 2024-09-16T06:35:00.849 UTC is most likely due to particle activity.\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/37523.",
"published": "2024-09-16T13:01:53.050893Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2024-09-16T13:01:53.050909Z",
"modified": "2024-09-16T13:01:53.056204Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5781040,
"topic": "gcn.circulars",
"uuid": "518eeb90-5290-4a93-aa74-57c2bac2733b",
"title": "The EP-WXT trigger EP250908a/01709240652 is not a real source",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41757"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41757....1Z",
"eventId": "EP250908a",
"subject": "The EP-WXT trigger EP250908a/01709240652 is not a real source",
"createdOn": 1757387668110,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41757,
"submittedHow": "web"
},
"message_text": "C. Zhou (HUST), Y. H. Cheng (SWIFAR, YNU), S. L. Wang (YNU), T. Y. Liu, H. Q. Cheng, C. C. Jin (NAO, CAS) report on behalf of the Einstein Probe (EP) team\n\nThe EP-WXT trigger EP250908a/01709240652 at the time of 2025-09-08T15:43:42 is not a real source based on ground data analysis.",
"published": "2025-09-22T08:08:50.436393Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-22T08:08:50.436401Z",
"modified": "2025-09-22T08:08:50.439831Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5777008,
"topic": "gcn.circulars",
"uuid": "4d015403-1bff-4103-a8b6-8f79b6b36487",
"title": "The EP-WXT trigger EP250908a/01709240652 is not a real source",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41757"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"eventId": "EP250908a",
"subject": "The EP-WXT trigger EP250908a/01709240652 is not a real source",
"createdOn": 1757387668110,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41757,
"submittedHow": "web"
},
"message_text": "C. Zhou (HUST), Y. H. Cheng (SWIFAR, YNU), S. L. Wang (YNU), T. Y. Liu, H. Q. Cheng, C. C. Jin (NAO, CAS) report on behalf of the Einstein Probe (EP) team\n\nThe EP-WXT trigger EP250908a/01709240652 at the time of 2025-09-08T15:43:42 is not a real source based on ground data analysis.",
"published": "2025-09-09T03:14:36.750879Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-09T03:14:36.750897Z",
"modified": "2025-09-09T03:14:36.758924Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5803146,
"topic": "gcn.circulars",
"uuid": "5c05743a-91e1-4464-9795-8eaee1acc254",
"title": "The EP-WXT trigger 01709249380 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/43021"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v6.0.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709249380 is likely a flaring star",
"createdOn": 1765101495442,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 43021,
"submittedHow": "web"
},
"message_text": "R.-Z. Li (YNAO, CAS), K. R. Ni (CCNU), Y. J. Yi (BNU) , X. X. Sun and C. C. Jin (NAO,CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709249380 at the time of 2025-12-07T09:19:14, is likely a stellar flare associated with 2MASS J05100460-0428037 (T Tauri Star). The estimated flux of the flare is around 8e-11erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 6.5e31 erg/s erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-12-07T09:58:22.326202Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-12-07T09:58:22.326242Z",
"modified": "2025-12-07T09:58:22.337300Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5801404,
"topic": "gcn.circulars",
"uuid": "91c19643-99f4-4e28-b2ff-6ab75baa86ca",
"title": "The EP-WXT trigger 01709248783 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/42812"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v6.0.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709248783 is likely a flaring star",
"createdOn": 1763891503604,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 42812,
"submittedHow": "web"
},
"message_text": "C.-L. Guo (NAO, CAS), J. Yang (ZZU), W.-F. Wen (SZTU), and Z.-X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709248783 at the time of 2025-11-23T09:00:39, is likely a stellar flare associated with a Double or Multiple Star BPS CS 31060-0015. The estimated flux of the flare is around 1e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 3.8e30 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-11-23T09:51:49.787329Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-11-23T09:51:49.787352Z",
"modified": "2025-11-23T09:51:49.806536Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5801032,
"topic": "gcn.circulars",
"uuid": "28a17035-d235-4bd9-a4d3-4fba7f3677cb",
"title": "The EP-WXT trigger 01709248635 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/42791"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v6.0.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709248635 is likely a flaring star",
"createdOn": 1763743502958,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 42791,
"submittedHow": "web"
},
"message_text": "Y.-H. I. Yin (HKU), B.-T. Wang (YNAO), H.-Z. Wu (HUST) and W. D. Zhang (NAOC) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709248635 at the time of 2025-11-21T16:11:59, is likely a stellar flare associated with a T Tauri Star HD 285751. The estimated flux of the flare is around 1.0e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.3e32 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-11-21T16:45:03.527611Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-11-21T16:45:03.527623Z",
"modified": "2025-11-21T16:45:03.530899Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5800596,
"topic": "gcn.circulars",
"uuid": "c71872d6-c9a3-4ac1-9f74-6f41aa4ce92f",
"title": "The EP-WXT trigger 01709248403 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/42775"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v6.0.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709248403 is likely a flaring star",
"createdOn": 1763602605325,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 42775,
"submittedHow": "web"
},
"message_text": "R.-Z. Li (YNAO, CAS), J. Yang (ZZU), R. Shi (PMO, CAS), F.-F. Song (YNAO, CAS), C. L. Guo and H. Sun (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709248403 at the time of 2025-11-19T18:55:22, is likely a stellar flare associated with a High Proper Motion Star PM J02028+0447. The estimated flux of the flare is around 2.6e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.3e31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).\n",
"published": "2025-11-20T01:36:52.027482Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-11-20T01:36:52.027495Z",
"modified": "2025-11-20T01:36:52.034977Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5800478,
"topic": "gcn.circulars",
"uuid": "2dfaf596-fbb7-4131-b8d7-db142a6921a6",
"title": "The EP-WXT trigger 01709248388 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/42764"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v6.0.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709248388 is likely a flaring star",
"createdOn": 1763566042681,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 42764,
"submittedHow": "web"
},
"message_text": "Q. C. Liu (THU), D. F. Hu, Q. J. Huang, R. Shi (PMO, CAS), F. F. Song (YNAO, CAS), S. Q. Jiang, C. C. Jin (NAO, CAS) report on behalf of the Einstein Probe team:\n\nThe EP-WXT trigger 01709248388 at 2025-11-19T13:12:46 is likely a stellar flare associated with one of the two stars, RX J0423.5+0955 or RX J0423.5+0955B, that lie within the FXT error circle. The estimated flux of the flare is around 6e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 9e+31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).\n",
"published": "2025-11-19T16:57:03.196016Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-11-19T16:57:03.196026Z",
"modified": "2025-11-19T16:57:03.201243Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5800479,
"topic": "gcn.circulars",
"uuid": "fdd66d96-fb0d-4313-8a4d-d7896528bdbc",
"title": "The EP-WXT trigger 01709248388 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/42764"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v6.0.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709248388 is likely a flaring star",
"createdOn": 1763566042681,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 42764,
"submittedHow": "web"
},
"message_text": "Q. C. Liu (THU), D. F. Hu, Q. J. Huang, R. Shi (PMO, CAS), F. F. Song (YNAO, CAS), S. Q. Jiang, C. C. Jin (NAO, CAS) report on behalf of the Einstein Probe team:\n\nThe EP-WXT trigger 01709248388 at 2025-11-19T13:12:46 is likely a stellar flare associated with one of the two stars, RX J0423.5+0955 or RX J0423.5+0955B, that lie within the FXT error circle. The estimated flux of the flare is around 6e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 9e+31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).\n",
"published": "2025-11-19T16:57:03.207626Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-11-19T16:57:03.207636Z",
"modified": "2025-11-19T16:57:03.212736Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5795975,
"topic": "gcn.circulars",
"uuid": "7fe87f45-06d9-4980-bb85-fa011042d838",
"title": "The EP-WXT trigger 01709248221 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/42679"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v6.0.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709248221 is likely a flaring star",
"createdOn": 1763123629913,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 42679,
"submittedHow": "web"
},
"message_text": "Z. H. Yang, Q. C. Zhao, Z. X. Li, G. L. Huang, J. Y. Cao (IHEP), J. P. Chen (SYSU), Y. J. Yi (BNU), H. Q. Cheng, H. Sun (NAO, CAS), on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709248221 at the time of 2025-11-14T11:16:43, is likely a stellar flare associated with EM* LkCa 4. The estimated flux of the flare is around 8e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.6e+32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-11-14T12:33:57.236471Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-11-14T12:33:57.236490Z",
"modified": "2025-11-14T12:33:57.251690Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5800185,
"topic": "gcn.circulars",
"uuid": "058ebd44-dba3-4631-9fc5-8dfe6b003a4a",
"title": "The EP-WXT trigger 01709248051 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/42618"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v6.0.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.42618....1C",
"subject": "The EP-WXT trigger 01709248051 is likely a flaring star",
"createdOn": 1762564253836,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 42618,
"submittedHow": "web"
},
"message_text": "Y. H. Cheng (YNU), C. Y. Dai (NJU), R. D. Liang, W. Chen, H. Sun (NAO,CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709248051 at the time of 2025-11-08T00:00:49, is likely a stellar flare associated with the High Proper Motion Star [GBA2007] 680. The estimated flux of the flare is around 6 x 10^(-11) erg/s/cm^2 in 0.5-4 keV, corresponding to an X-ray luminosity of around 5.1 x 10^(31) erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-11-17T10:18:31.239212Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-11-17T10:18:31.239226Z",
"modified": "2025-11-17T10:18:31.244766Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5793738,
"topic": "gcn.circulars",
"uuid": "c76d3cfc-a950-4887-b2a3-9e3dd270f132",
"title": "The EP-WXT trigger 01709248051 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/42618"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709248051 is likely a flaring star",
"createdOn": 1762564253836,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 42618,
"submittedHow": "web"
},
"message_text": "Y. H. Cheng (YNU), C. Y. Dai (NJU), R. D. Liang, W. Chen, H. Sun (NAO,CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709248051 at the time of 2025-11-08T00:00:49, is likely a stellar flare associated with the High Proper Motion Star [GBA2007] 680. The estimated flux of the flare is around 6 x 10^(-11) erg/s/cm^2 in 0.5-4 keV, corresponding to an X-ray luminosity of around 5.1 x 10^(31) erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-11-08T02:30:31.063403Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-11-08T02:30:31.063431Z",
"modified": "2025-11-08T02:30:31.087782Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5800162,
"topic": "gcn.circulars",
"uuid": "3ef8e3df-84dd-458f-b48e-7401d020b1e0",
"title": "The EP-WXT trigger 01709247588: more evidence of flaring star from Mondy optical observations",
"submitter": "Alina Volnova at IKI RAS <alinusss@gmail.com>",
"authors": "Alina Volnova at IKI RAS <alinusss@gmail.com>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/42713"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v6.0.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709247588: more evidence of flaring star from Mondy optical observations",
"createdOn": 1763373394784,
"submitter": "Alina Volnova at IKI RAS <alinusss@gmail.com>",
"circularId": 42713,
"submittedHow": "web"
},
"message_text": "A. Volnova (IKI), E. Klunko (ISTP), A. Pozanenko (IKI) report on behalf of IKI-GRB-FuN:\n\nWe observed the field of the EP-WXT trigger 01709247588 (Feng et al., GCN 42510) with the AZT-33IK 1.5m telescope of the Sayan Solar Observatory (Mondy) in the R-filter starting Oct., 29, 2025, UT 16:48:48, and taking several frames with 120 s exposures. The Emission-line Star PM J04472+2038 likely associated with the transient is clearly detected and not saturated. Preliminary photometry and observational details are the following:\n\nDate UT start MJD Exp. Filter Star Err. UL \n (mid) (n*s) (3sigma) \n2025-10-29 16:48:48 60977.71098 15*120 R 13.25 0.08 22.2\n\nThe photometry is based on several nearby USNO-B1.0 stars (R2-magnitudes) and is not corrected for the Galactic extinction, all magnitudes are in Vega system. The star PM J04472+2038 is at least 0.4 mag brighter in our observations comparing to USNO-B1.0 and UCAC catalogues: UCAC R = 13.99 +/- 0.09, USNO-B1.0 R1 = 13.65, R2 = 14.07. This 0.4m brightness increase 5.5 hours after the EP-WXT trigger may confirm the connection between EP-WXT 01709247588 and the stellar flare.",
"published": "2025-11-17T10:18:30.881664Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-11-17T10:18:30.881678Z",
"modified": "2025-11-17T10:18:30.887258Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5792494,
"topic": "gcn.circulars",
"uuid": "837dd735-1f97-4898-8e27-f7c72b70dc7d",
"title": "The EP-WXT trigger 01709247588 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/42510"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.42510....1F",
"subject": "The EP-WXT trigger 01709247588 is likely a flaring star",
"createdOn": 1761739328732,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 42510,
"submittedHow": "web"
},
"message_text": "Author list: J. P. Feng, B. Zhang (USTC), Y. Wang, Y. F. Liang (PMO, CAS), W. D. Zhang (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nContent:\nThe EP-WXT trigger 01709247588 at the time of 2025-10-29T06:43:17 UTC, is likely a stellar flare associated with Emission-line Star--PM J04472+2038. The estimated flux of the flare is around 1.6e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1e31 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).\n",
"published": "2025-11-03T08:12:08.637158Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-11-03T08:12:08.637173Z",
"modified": "2025-11-03T08:12:08.641528Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5792537,
"topic": "gcn.circulars",
"uuid": "ad15b8c4-e7f0-4512-890f-ca5a507c489a",
"title": "The EP-WXT trigger 01709247525 is not a real source",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/42496"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.42496....1W",
"subject": "The EP-WXT trigger 01709247525 is not a real source",
"createdOn": 1761615858290,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 42496,
"submittedHow": "web"
},
"message_text": "J. H. Wu (GZHU), A. Li (BNU), H. Q. Cheng and H. Sun (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709247525 at the time of 2025-10-27T03:28:52.59, is not a real source.",
"published": "2025-11-03T08:12:20.178949Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-11-03T08:12:20.178964Z",
"modified": "2025-11-03T08:12:20.183679Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5780011,
"topic": "gcn.circulars",
"uuid": "ed3600ce-eda9-4e47-ae61-7d514b2f24b3",
"title": "The EP-WXT trigger 01709243841: Las Cumbres discovery of the optical counterpart",
"submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"authors": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41877"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709243841: Las Cumbres discovery of the optical counterpart",
"version": 2,
"editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"editedOn": 1758287729016,
"createdOn": 1758252535463,
"submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"circularId": 41877,
"submittedHow": "web"
},
"message_text": "Wenxiong Li (NAOC), Iair Arcavi (TAU), Ido Keinan (TAU), David Sand (U of Arizona)\nWe observed the position of EP-WXT trigger 01709243841 with a Las Cumbres 1m telescope at Cerro Tololo Inter-American Observatory 0.8 hours after the Einstein Probe WXT trigger. We took 2x300s exposures in the broad optical w band. We find an uncataloged source at RA=298.55383, Dec=-48.8378 within the EP/WXT error circle and measure the following preliminary photometry calibrated to the r band:\nMJD 60937.127 Mag 17.0\nAdditional followup is encouraged.\n",
"published": "2025-09-19T13:15:32.472702Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-19T13:15:32.472716Z",
"modified": "2025-09-19T13:15:32.481382Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5780918,
"topic": "gcn.circulars",
"uuid": "76109d79-6bbd-424d-9c6a-b3cc7358d445",
"title": "The EP-WXT trigger 01709243841: Las Cumbres discovery of the optical counterpart",
"submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"authors": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41877"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41877....1L",
"subject": "The EP-WXT trigger 01709243841: Las Cumbres discovery of the optical counterpart",
"version": 2,
"editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"editedOn": 1758287729016,
"createdOn": 1758252535463,
"submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"circularId": 41877,
"submittedHow": "web"
},
"message_text": "Wenxiong Li (NAOC), Iair Arcavi (TAU), Ido Keinan (TAU), David Sand (U of Arizona)\nWe observed the position of EP-WXT trigger 01709243841 with a Las Cumbres 1m telescope at Cerro Tololo Inter-American Observatory 0.8 hours after the Einstein Probe WXT trigger. We took 2x300s exposures in the broad optical w band. We find an uncataloged source at RA=298.55383, Dec=-48.8378 within the EP/WXT error circle and measure the following preliminary photometry calibrated to the r band:\nMJD 60937.127 Mag 17.0\nAdditional followup is encouraged.\n",
"published": "2025-09-22T08:08:48.216487Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-22T08:08:48.216494Z",
"modified": "2025-09-22T08:08:48.219892Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5780012,
"topic": "gcn.circulars",
"uuid": "a8839aec-f445-4524-b235-03bd54391fb5",
"title": "The EP-WXT trigger 01709243841: Las Cumbres discovery of the optical counterpart",
"submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"authors": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41877"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709243841: Las Cumbres discovery of the optical counterpart",
"version": 2,
"editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"editedOn": 1758287729016,
"createdOn": 1758252535463,
"submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"circularId": 41877,
"submittedHow": "web"
},
"message_text": "Wenxiong Li (NAOC), Iair Arcavi (TAU), Ido Keinan (TAU), David Sand (U of Arizona)\nWe observed the position of EP-WXT trigger 01709243841 with a Las Cumbres 1m telescope at Cerro Tololo Inter-American Observatory 0.8 hours after the Einstein Probe WXT trigger. We took 2x300s exposures in the broad optical w band. We find an uncataloged source at RA=298.55383, Dec=-48.8378 within the EP/WXT error circle and measure the following preliminary photometry calibrated to the r band:\nMJD 60937.127 Mag 17.0\nAdditional followup is encouraged.\n",
"published": "2025-09-19T13:16:03.706565Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-19T13:16:03.706576Z",
"modified": "2025-09-19T13:16:03.710091Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5783000,
"topic": "gcn.circulars",
"uuid": "42e04388-cddc-4c4b-bf0d-7ee29aaaa5a2",
"title": "The EP-WXT trigger 01709243841: Las Cumbres discovery of the optical counterpart",
"submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"authors": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41877"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41877....1L",
"eventId": "EP250919a",
"subject": "The EP-WXT trigger 01709243841: Las Cumbres discovery of the optical counterpart",
"version": 3,
"editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Daniele Bjørn Malesani at Cosmic Dawn Center, Niels Bohr Institute <daniele.malesani@nbi.ku.dk>",
"editedOn": 1759153022790,
"createdOn": 1758252535463,
"submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"circularId": 41877,
"submittedHow": "web"
},
"message_text": "Wenxiong Li (NAOC), Iair Arcavi (TAU), Ido Keinan (TAU), David Sand (U of Arizona)\nWe observed the position of EP-WXT trigger 01709243841 with a Las Cumbres 1m telescope at Cerro Tololo Inter-American Observatory 0.8 hours after the Einstein Probe WXT trigger. We took 2x300s exposures in the broad optical w band. We find an uncataloged source at RA=298.55383, Dec=-48.8378 within the EP/WXT error circle and measure the following preliminary photometry calibrated to the r band:\nMJD 60937.127 Mag 17.0\nAdditional followup is encouraged.\n",
"published": "2025-09-29T13:37:03.611913Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-29T13:37:03.611935Z",
"modified": "2025-09-29T13:37:03.621062Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5781052,
"topic": "gcn.circulars",
"uuid": "a5ada42c-c53d-4869-a0c5-19362280f9d5",
"title": "The EP-WXT trigger 01709241037 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41844"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41844....1W",
"subject": "The EP-WXT trigger 01709241037 is likely a flaring star",
"createdOn": 1758075425674,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41844,
"submittedHow": "web"
},
"message_text": "B.T. Wang (YNAO, CAS), S. Q . Jiang, W. D. Zhang (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709241037 at the time of 2025-09-16T23:34:38 (UTC), is likely a stellar flare associated with UPM J0113-5939. The estimated flux of the flare is around 6e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.3e31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-22T08:08:50.550366Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-22T08:08:50.550374Z",
"modified": "2025-09-22T08:08:50.553601Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5779174,
"topic": "gcn.circulars",
"uuid": "0edfa085-97ac-4b99-b4eb-bdb78d2f27d6",
"title": "The EP-WXT trigger 01709241037 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41844"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709241037 is likely a flaring star",
"createdOn": 1758075425674,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41844,
"submittedHow": "web"
},
"message_text": "B.T. Wang (YNAO, CAS), S. Q . Jiang, W. D. Zhang (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709241037 at the time of 2025-09-16T23:34:38 (UTC), is likely a stellar flare associated with UPM J0113-5939. The estimated flux of the flare is around 6e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.3e31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-17T02:17:14.288427Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-17T02:17:14.288447Z",
"modified": "2025-09-17T02:17:14.301929Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5779833,
"topic": "gcn.circulars",
"uuid": "5258d551-9836-45b8-8fdb-ce2157444a2e",
"title": "The EP-WXT trigger 01709240768: Las Cumbres discovery of the optical counterpart",
"submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"authors": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41877"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709240768: Las Cumbres discovery of the optical counterpart",
"createdOn": 1758252535463,
"submitter": "Wenxiong Li at NAOC <liwenxiong1992@gmail.com>",
"circularId": 41877,
"submittedHow": "web"
},
"message_text": "Wenxiong Li (NAOC), Iair Arcavi (TAU), Ido Keinan (TAU), David Sand (U of Arizona)\nWe observed the position of EP-WXT trigger 01709240768 with a Las Cumbres 1m telescope at Cerro Tololo Inter-American Observatory 0.8 hours after the Einstein Probe WXT trigger. We took 2x300s exposures in the broad optical w band. We find an uncataloged source at RA=298.55383, Dec=-48.8378 within the EP/WXT error circle and measure the following preliminary photometry calibrated to the r band:\nMJD 60937.127 Mag 17.0\nAdditional followup is encouraged.\n",
"published": "2025-09-19T03:29:03.110997Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-19T03:29:03.111010Z",
"modified": "2025-09-19T03:29:03.131508Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5778209,
"topic": "gcn.circulars",
"uuid": "eb27c39c-d82e-4562-87cb-6aae7f2f1ad4",
"title": "The EP-WXT trigger 01709240768 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41823"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709240768 is likely a flaring star",
"createdOn": 1757729270586,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41823,
"submittedHow": "web"
},
"message_text": "W.Chen, X. Mao, Z.X. Ling(NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709240768 at the time of 2025-09-12T23:11:57 is likely a stellar flare associated with LSPM J0011+0227. The estimated flux of the flare is around 6x10^-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.2x10^31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-13T02:07:58.991638Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-13T02:07:58.991658Z",
"modified": "2025-09-13T02:07:59.006407Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5781050,
"topic": "gcn.circulars",
"uuid": "d1857ff0-6aa3-40a0-b397-c91b7a1daa56",
"title": "The EP-WXT trigger 01709240768 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41823"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41823....1C",
"subject": "The EP-WXT trigger 01709240768 is likely a flaring star",
"createdOn": 1757729270586,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41823,
"submittedHow": "web"
},
"message_text": "W.Chen, X. Mao, Z.X. Ling(NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709240768 at the time of 2025-09-12T23:11:57 is likely a stellar flare associated with LSPM J0011+0227. The estimated flux of the flare is around 6x10^-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.2x10^31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-22T08:08:50.533275Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-22T08:08:50.533283Z",
"modified": "2025-09-22T08:08:50.536749Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5780904,
"topic": "gcn.circulars",
"uuid": "b1f860d7-b9ce-434f-8a88-d0fa68f1659f",
"title": "The EP-WXT trigger 01709240674 is triggered by the known source SS Cyg",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41764"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41764....1L",
"subject": "The EP-WXT trigger 01709240674 is triggered by the known source SS Cyg",
"createdOn": 1757412604051,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41764,
"submittedHow": "web"
},
"message_text": "M. J. Liu, M. H. Zhang (NAO, CAS), Y.-H. I. Yin (NJU), X. X. Sun, T. Y. Liu, H. Y. Ren, H. Sun (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709240674 at the time of 2025-09-09T09:16:57 is associated with the cataclysmic binary SS Cyg. The estimated flux of the flare is around 2.6 x 10^(-10) erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4.0 x 10^32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-22T08:08:48.074145Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-22T08:08:48.074153Z",
"modified": "2025-09-22T08:08:48.077679Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5777082,
"topic": "gcn.circulars",
"uuid": "f20d8a48-c903-407a-93e9-60f34b7695ff",
"title": "The EP-WXT trigger 01709240674 is triggered by the known source SS Cyg",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41764"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709240674 is triggered by the known source SS Cyg",
"createdOn": 1757412604051,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41764,
"submittedHow": "web"
},
"message_text": "M. J. Liu, M. H. Zhang (NAO, CAS), Y.-H. I. Yin (NJU), X. X. Sun, T. Y. Liu, H. Y. Ren, H. Sun (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709240674 at the time of 2025-09-09T09:16:57 is associated with the cataclysmic binary SS Cyg. The estimated flux of the flare is around 2.6 x 10^(-10) erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4.0 x 10^32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-09T10:10:11.561014Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-09T10:10:11.561050Z",
"modified": "2025-09-09T10:10:11.572101Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5775812,
"topic": "gcn.circulars",
"uuid": "82686838-bfb4-46bb-9c48-e6bc1bba7f4f",
"title": "The EP-WXT trigger 01709201259: a brightening of LMXB 1ES 1735-26.9",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41716"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709201259: a brightening of LMXB 1ES 1735-26.9",
"createdOn": 1757056033015,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41716,
"submittedHow": "web"
},
"message_text": "R. D. Liang (NAOC), Y. Wang (PMO), Y.H.Cheng (SWIFAR,YNU), W. D. Zhang (NAOC) on behalf of the Einstein Probe (EP) team:\n\nWe report on the detection of X-ray brightening of Low Mass X-ray Binary (LMXB) 1ES 1735-26.9 by the Wide-field X-ray Telescope (WXT) on board the Einstein Probe (EP) mission. The burst triggered EP-WXT (ID: 01709201259) at the time of 2025-09-05T05:11:45 UTC. The WXT position of the source is R.A. = 264.569 deg, DEC = -26.997 deg (J2000) with an uncertainty of 3 arcmin in radius (90% C.L. statistical and systematic). The estimated flux in the 0.5-4 keV band is around 5 x 10^-10 erg/cm^2/s, which is an order of magnitude higher than the previous detection.\n\nA follow-up observation with the Follow-up X-ray Telescope (FXT) was performed automatically. An X-ray source was detected at R.A. = 264.5679 deg, DEC = -26.9927 (J2000) with an uncertainty of 20 arcsec in radius (90% C.L. statistical and systematic), which is consistent with the position of known LMXB 1ES 1735-26.9. The estimated flux in the 0.5-10 keV band is around 2 x 10^-10 erg/cm^2/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-05T07:07:22.387729Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-05T07:07:22.387749Z",
"modified": "2025-09-05T07:07:22.399095Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5780988,
"topic": "gcn.circulars",
"uuid": "1e1ccd7a-29ac-4c70-af32-6a38062bc2e5",
"title": "The EP-WXT trigger 01709201209 is likely a flaring star ",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41690"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41690....1L",
"subject": "The EP-WXT trigger 01709201209 is likely a flaring star ",
"createdOn": 1756962081344,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41690,
"submittedHow": "web"
},
"message_text": "R.-Z. Li (YNAO, CAS), H. Z. Wu (HUST), M. J. Liu and H. W. Pan (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709201209 at the time of 2025-09-04T03:24:02, is likely a stellar flare associated with 1RXS J020013.6-084106. The estimated flux of the flare is around 4x10^-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 6.5x10^31 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-22T08:08:49.888366Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-22T08:08:49.888374Z",
"modified": "2025-09-22T08:08:49.891768Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5775414,
"topic": "gcn.circulars",
"uuid": "a24d46e1-fef0-4746-8d87-eaa7bffd371d",
"title": "The EP-WXT trigger 01709201209 is likely a flaring star ",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41690"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709201209 is likely a flaring star ",
"createdOn": 1756962081344,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41690,
"submittedHow": "web"
},
"message_text": "R.-Z. Li (YNAO, CAS), H. Z. Wu (HUST), M. J. Liu and H. W. Pan (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709201209 at the time of 2025-09-04T03:24:02, is likely a stellar flare associated with 1RXS J020013.6-084106. The estimated flux of the flare is around 4x10^-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 6.5x10^31 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-04T05:01:30.184842Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-04T05:01:30.184864Z",
"modified": "2025-09-04T05:01:30.204153Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5781015,
"topic": "gcn.circulars",
"uuid": "f8684fcd-9b20-4a9d-85bf-cd431f127e6d",
"title": "The EP-WXT trigger 01709200994 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41599"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41599....1N",
"subject": "The EP-WXT trigger 01709200994 is likely a flaring star",
"createdOn": 1756524145770,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41599,
"submittedHow": "web"
},
"message_text": "K.R. Ni (CCNU), X. Tian (GXU), Y. J. Song (NAO,CAS) and R. D. Liang, W. D. Zhang (NAO,CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709200994 at the time of 2025-08-29 20:57:26, is likely a stellar flare associated with LP 524-48. The estimated flux of the flare is around 6.92e-12 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4.52e29 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-22T08:08:50.179498Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-22T08:08:50.179506Z",
"modified": "2025-09-22T08:08:50.183030Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5773813,
"topic": "gcn.circulars",
"uuid": "38e36460-cf91-44d3-8b60-5435a32bd8e1",
"title": "The EP-WXT trigger 01709200994 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41599"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709200994 is likely a flaring star",
"createdOn": 1756524145770,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41599,
"submittedHow": "web"
},
"message_text": "K.R. Ni (CCNU), X. Tian (GXU), Y. J. Song (NAO,CAS) and R. D. Liang, W. D. Zhang (NAO,CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709200994 at the time of 2025-08-29 20:57:26, is likely a stellar flare associated with LP 524-48. The estimated flux of the flare is around 6.92e-12 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4.52e29 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-08-30T03:22:34.481215Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-08-30T03:22:34.481234Z",
"modified": "2025-08-30T03:22:34.492899Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5776759,
"topic": "gcn.circulars",
"uuid": "3d73b3ff-6d2d-4c10-b15e-d21c8c45e24b",
"title": "The EP-WXT trigger 01709200800 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41561"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41561....1N",
"subject": "The EP-WXT trigger 01709200800 is likely a flaring star",
"createdOn": 1756298785830,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41561,
"submittedHow": "web"
},
"message_text": "K. R. Ni (CCNU), Y. L. Hua (PMO,CAS) M. J. Liu and C. C. Jin (NAO,CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709200800 at the time of 2025-08-27T11:22:22, is likely a stellar flare associated with LSPM J0220+3320. The estimated flux of the flare is around 4.87e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.61e31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-08T08:08:58.126201Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-08T08:08:58.126254Z",
"modified": "2025-09-08T08:08:58.130521Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5773078,
"topic": "gcn.circulars",
"uuid": "4655005a-268c-4157-b4bf-d4777c0d293a",
"title": "The EP-WXT trigger 01709200800 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41561"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709200800 is likely a flaring star",
"createdOn": 1756298785830,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41561,
"submittedHow": "web"
},
"message_text": "K. R. Ni (CCNU), Y. L. Hua (PMO,CAS) M. J. Liu and C. C. Jin (NAO,CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709200800 at the time of 2025-08-27T11:22:22, is likely a stellar flare associated with LSPM J0220+3320. The estimated flux of the flare is around 4.87e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.61e31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-08-27T12:46:37.296803Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-08-27T12:46:37.296821Z",
"modified": "2025-08-27T12:46:37.314528Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5776587,
"topic": "gcn.circulars",
"uuid": "81098727-43b7-4304-bdf7-ade8722a55ce",
"title": "The EP-WXT trigger 01709200707 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41526"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41526....1L",
"subject": "The EP-WXT trigger 01709200707 is likely a flaring star",
"createdOn": 1756042298803,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41526,
"submittedHow": "web"
},
"message_text": "A. Li (BNU), C. Y. Wang（THU）, X. Y. Zhou (PRIC), W. D. Zhang (NAOC) report on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709200707 at the time of 2025-08-24T12:40:53, is likely a stellar flare associated with UCAC4 268-197742. The estimated flux of the flare is around 6e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.1e31 erg/s.\n\nA follow-up observation with the Follow-up X-ray Telescope (FXT) was performed automatically. Within the WXT error circle, an X-ray source was detected at R.A. = 328.5143 deg, DEC = -36.5634 deg (J2000) with an uncertainty of 20 arcsec in radius (90% C.L. statistical and systematic), 10 arcsec from UCAC4 268-197742.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-08T08:08:41.649247Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-08T08:08:41.649263Z",
"modified": "2025-09-08T08:08:41.653535Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5772340,
"topic": "gcn.circulars",
"uuid": "36ff669c-f5fb-47c0-875f-d10deede5c09",
"title": "The EP-WXT trigger 01709200707 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41526"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709200707 is likely a flaring star",
"createdOn": 1756042298803,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41526,
"submittedHow": "web"
},
"message_text": "A. Li (BNU), C. Y. Wang（THU）, X. Y. Zhou (PRIC), W. D. Zhang (NAOC) report on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709200707 at the time of 2025-08-24T12:40:53, is likely a stellar flare associated with UCAC4 268-197742. The estimated flux of the flare is around 6e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.1e31 erg/s.\n\nA follow-up observation with the Follow-up X-ray Telescope (FXT) was performed automatically. Within the WXT error circle, an X-ray source was detected at R.A. = 328.5143 deg, DEC = -36.5634 deg (J2000) with an uncertainty of 20 arcsec in radius (90% C.L. statistical and systematic), 10 arcsec from UCAC4 268-197742.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-08-24T13:31:48.085289Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-08-24T13:31:48.085314Z",
"modified": "2025-08-24T13:31:48.112315Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5776820,
"topic": "gcn.circulars",
"uuid": "963442d6-83d8-4555-954f-d05f5554043f",
"title": "The EP-WXT trigger 01709200706 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41524"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41524....1L",
"subject": "The EP-WXT trigger 01709200706 is likely a flaring star",
"createdOn": 1756039056330,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41524,
"submittedHow": "web"
},
"message_text": "A. Li (BNU), C. Y. Wang（THU）, X. Y. Zhou (PRIC), W. D. Zhang (NAOC) report on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709200706 at the time of 2025-08-24T09:38:33, is likely a stellar flare associated with UCAC4 277-216984. The estimated flux of the flare is around 8e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.4e31 erg/s.\n\nA follow-up observation with the Follow-up X-ray Telescope (FXT) was performed automatically. Within the WXT error circle, an X-ray source was detected at R.A. = 355.8633 deg, DEC = -34.7836 deg (J2000) with an uncertainty of 20 arcsec in radius (90% C.L. statistical and systematic), 6 arcsec from UCAC4 277-216984.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-09-08T08:09:02.970589Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-09-08T08:09:02.970604Z",
"modified": "2025-09-08T08:09:02.974489Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5772329,
"topic": "gcn.circulars",
"uuid": "8bcbf540-48b2-4d29-9b99-9f097ad2faa0",
"title": "The EP-WXT trigger 01709200706 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41524"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709200706 is likely a flaring star",
"createdOn": 1756039056330,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41524,
"submittedHow": "web"
},
"message_text": "A. Li (BNU), C. Y. Wang（THU）, X. Y. Zhou (PRIC), W. D. Zhang (NAOC) report on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709200706 at the time of 2025-08-24T09:38:33, is likely a stellar flare associated with UCAC4 277-216984. The estimated flux of the flare is around 8e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.4e31 erg/s.\n\nA follow-up observation with the Follow-up X-ray Telescope (FXT) was performed automatically. Within the WXT error circle, an X-ray source was detected at R.A. = 355.8633 deg, DEC = -34.7836 deg (J2000) with an uncertainty of 20 arcsec in radius (90% C.L. statistical and systematic), 6 arcsec from UCAC4 277-216984.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-08-24T12:37:45.825804Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-08-24T12:37:45.825827Z",
"modified": "2025-08-24T12:37:45.847003Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5772532,
"topic": "gcn.circulars",
"uuid": "efc33b09-8474-4f22-9e95-47e08f19bd6c",
"title": " The EP-WXT trigger 01709198251 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41219"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41219....1M",
"subject": " The EP-WXT trigger 01709198251 is likely a flaring star",
"createdOn": 1754173015982,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41219,
"submittedHow": "web"
},
"message_text": "X. Mao (NAO, CAS), Y.-H. I. Yin (NJU), T. Zhao, C. C. Jin (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709198251 at the time of 2025-08-02T20:32:45, is likely a stellar flare associated with V5663 Sgr. The estimated flux of the flare is around 1.8 x 10^-10 erg/s/cm^2 in 0.5-4.0 keV. The autonomous follow-up observation with the Follow-up X-ray Telescope (FXT) detected a source at R.A. = 301.4836, DEC = -32.2848 deg (J2000) with an uncertainty of 20 arcsec in radius (90% C.L. statistical and systematic) within the WXT error circle, whose position is around 7.5 arcsec away from the high proper motion star V5663 Sgr.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-08-25T08:08:47.444697Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-08-25T08:08:47.444714Z",
"modified": "2025-08-25T08:08:47.448349Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2789609,
"topic": "gcn.circulars",
"uuid": "5159a447-5819-46b5-ab5a-2b669c3b2b0c",
"title": " The EP-WXT trigger 01709198251 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41219"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": " The EP-WXT trigger 01709198251 is likely a flaring star",
"createdOn": 1754173015982,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41219,
"submittedHow": "web"
},
"message_text": "X. Mao (NAO, CAS), Y.-H. I. Yin (NJU), T. Zhao, C. C. Jin (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709198251 at the time of 2025-08-02T20:32:45, is likely a stellar flare associated with V5663 Sgr. The estimated flux of the flare is around 1.8 x 10^-10 erg/s/cm^2 in 0.5-4.0 keV. The autonomous follow-up observation with the Follow-up X-ray Telescope (FXT) detected a source at R.A. = 301.4836, DEC = -32.2848 deg (J2000) with an uncertainty of 20 arcsec in radius (90% C.L. statistical and systematic) within the WXT error circle, whose position is around 7.5 arcsec away from the high proper motion star V5663 Sgr.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-08-02T22:54:24.590889Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-08-02T22:54:24.590904Z",
"modified": "2025-08-02T22:54:24.595019Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 5772539,
"topic": "gcn.circulars",
"uuid": "7fd305a5-fb66-416e-9399-7eee4928b063",
"title": "The EP-WXT trigger 01709198202 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41217"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.5.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41217....1Z",
"subject": "The EP-WXT trigger 01709198202 is likely a flaring star",
"createdOn": 1754142198491,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41217,
"submittedHow": "web"
},
"message_text": "T. Zhao (NAO, CAS), Q. C. Liu (THU), B. B. Zhang , Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709198202 at the time of 2025-08-02T12:44:54, is likely a stellar flare associated with BD-08 6022. The estimated flux of the flare is around 8.0 x 10^-11 erg/s/cm^2 in 0.5-4.0 keV. The autonomous follow-up observation with the Follow-up X-ray Telescope (FXT) detected a source at R.A. = 346.4735, DEC = -7.7644 deg (J2000) with an uncertainty of 20 arcsec in radius (90% C.L. statistical and systematic) within the WXT error circle, whose position is 10.2 arcsec away from the Eclipsing Binary BD-08 6022.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-08-25T08:08:49.519796Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-08-25T08:08:49.519807Z",
"modified": "2025-08-25T08:08:49.522778Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2723492,
"topic": "gcn.circulars",
"uuid": "555106ab-c8c5-4927-995e-eadb544c5ba8",
"title": "The EP-WXT trigger 01709198202 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41217"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709198202 is likely a flaring star",
"createdOn": 1754142198491,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41217,
"submittedHow": "web"
},
"message_text": "T. Zhao (NAO, CAS), Q. C. Liu (THU), B. B. Zhang , Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709198202 at the time of 2025-08-02T12:44:54, is likely a stellar flare associated with BD-08 6022. The estimated flux of the flare is around 8.0 x 10^-11 erg/s/cm^2 in 0.5-4.0 keV. The autonomous follow-up observation with the Follow-up X-ray Telescope (FXT) detected a source at R.A. = 346.4735, DEC = -7.7644 deg (J2000) with an uncertainty of 20 arcsec in radius (90% C.L. statistical and systematic) within the WXT error circle, whose position is 10.2 arcsec away from the Eclipsing Binary BD-08 6022.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-08-02T13:58:50.291525Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-08-02T13:58:50.291544Z",
"modified": "2025-08-02T13:58:50.306908Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3073766,
"topic": "gcn.circulars",
"uuid": "f346c693-a8f9-4c61-943c-d97f365e5d02",
"title": "The EP-WXT trigger 01709195487 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41173"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41173....1L",
"subject": "The EP-WXT trigger 01709195487 is likely a flaring star",
"createdOn": 1753609620023,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41173,
"submittedHow": "web"
},
"message_text": "R. D. Liang (NAO, CAS), Y.-H. I. Yin (NJU), Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709195487 at the time of 2025-07-27T07:34:04, is likely a stellar flare associated with UPM J1905-2819. The estimated flux of the flare is around 1.2 x 10^-10 erg/s/cm^2 in 0.5-4.0 keV. The autonomous follow-up observation with the Follow-up X-ray Telescope (FXT) detected a source at R.A. = 286.3565, DEC = -28.3311 deg (J2000) with an uncertainty of 20 arcsec in radius (90% C.L. statistical and systematic) within the WXT error circle, whose position is around 9 arcsec away from the high proper motion star UPM J1905-2819.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-08-04T08:08:58.150770Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-08-04T08:08:58.150791Z",
"modified": "2025-08-04T08:08:58.154288Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 421227,
"topic": "gcn.circulars",
"uuid": "ca46e9cc-bb19-4845-b2da-e01ab37a4b75",
"title": "The EP-WXT trigger 01709181970 is likely a flaring star ",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41045"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.41045....1P",
"subject": "The EP-WXT trigger 01709181970 is likely a flaring star ",
"createdOn": 1752031849738,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41045,
"submittedHow": "web"
},
"message_text": "H.L. Peng (NNU), C. Zhou, P. Y. Han (HUST) , Q. C. Liu (THU), B. B. Zhang (NAO, CAS), G. Y. Zhao (SYSU), Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709181970 at the time of 2025-07-08T22:23:23, is likely a stellar flare associated with Gaia DR3 4587345820285675136. The estimated flux of the flare is around 2.4 x 10^-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4.5 x 10^31 erg/s.\n \nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-07-14T08:08:40.960527Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-07-14T08:08:40.960551Z",
"modified": "2025-07-14T08:08:40.963736Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 387250,
"topic": "gcn.circulars",
"uuid": "6808d095-f9d0-4990-b615-192e810ff0f2",
"title": "The EP-WXT trigger 01709181970 is likely a flaring star ",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/41045"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709181970 is likely a flaring star ",
"createdOn": 1752031849738,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 41045,
"submittedHow": "web"
},
"message_text": "H.L. Peng (NNU), C. Zhou, P. Y. Han (HUST) , Q. C. Liu (THU), B. B. Zhang (NAO, CAS), G. Y. Zhao (SYSU), Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709181970 at the time of 2025-07-08T22:23:23, is likely a stellar flare associated with Gaia DR3 4587345820285675136. The estimated flux of the flare is around 2.4 x 10^-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4.5 x 10^31 erg/s.\n \nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-07-09T03:30:56.549096Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-07-09T03:30:56.549117Z",
"modified": "2025-07-09T03:30:56.569520Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 421145,
"topic": "gcn.circulars",
"uuid": "5a516b97-f201-4da8-bcec-0dde74230c84",
"title": "The EP-WXT trigger 01709181580 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40997"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40997....1L",
"subject": "The EP-WXT trigger 01709181580 is likely a flaring star",
"createdOn": 1751852507537,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40997,
"submittedHow": "web"
},
"message_text": "D. Y. Li (NAO, CAS), G. Y. Zhao (SYSU), C. Zhou, P. Y. Han (HUST) , W. D. Zhang (NAO, CAS)on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709181580 at the time of 2025-07-06T17:32:37, is likely a stellar flare associated with PM J17411+1504. The estimated flux of the flare is around 1.2 x 10^-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.8 x 10^31 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-07-14T08:08:16.902482Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-07-14T08:08:16.902495Z",
"modified": "2025-07-14T08:08:16.905419Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 374134,
"topic": "gcn.circulars",
"uuid": "b956cde7-ef60-4412-9c12-5dfa6add95bd",
"title": "The EP-WXT trigger 01709181580 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40997"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709181580 is likely a flaring star",
"createdOn": 1751852507537,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40997,
"submittedHow": "web"
},
"message_text": "D. Y. Li (NAO, CAS), G. Y. Zhao (SYSU), C. Zhou, P. Y. Han (HUST) , W. D. Zhang (NAO, CAS)on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709181580 at the time of 2025-07-06T17:32:37, is likely a stellar flare associated with PM J17411+1504. The estimated flux of the flare is around 1.2 x 10^-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.8 x 10^31 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-07-07T01:41:56.211535Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-07-07T01:41:56.211589Z",
"modified": "2025-07-07T01:41:56.215206Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 374139,
"topic": "gcn.circulars",
"uuid": "5632c114-a46d-4bc1-b6d5-d8b263ba783b",
"title": "The EP-WXT trigger 01709181580 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40997"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709181580 is likely a flaring star",
"createdOn": 1751852507537,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40997,
"submittedHow": "web"
},
"message_text": "D. Y. Li (NAO, CAS), G. Y. Zhao (SYSU), C. Zhou, P. Y. Han (HUST) , W. D. Zhang (NAO, CAS)on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709181580 at the time of 2025-07-06T17:32:37, is likely a stellar flare associated with PM J17411+1504. The estimated flux of the flare is around 1.2 x 10^-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.8 x 10^31 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-07-07T01:42:26.322019Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-07-07T01:42:26.322035Z",
"modified": "2025-07-07T01:42:26.325592Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 421271,
"topic": "gcn.circulars",
"uuid": "32f6b38e-5a7c-4f23-82b3-b0d0e20ac405",
"title": "The EP-WXT trigger 01709179435 is likely a new outburst of the CV SS Cyg",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40847"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40847....1W",
"subject": "The EP-WXT trigger 01709179435 is likely a new outburst of the CV SS Cyg",
"createdOn": 1750998486654,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40847,
"submittedHow": "web"
},
"message_text": "B.-T. Wang (YNAO,CAS), J. H. Wu (GZHU), W. F. Wen(SZTU), J. W. Hu, Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709179435 at the time of 2025-06-27T03:38:47, is likely a new outburst associated with CV SS Cyg. The estimated flux of the outburst is around 2e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 3e+32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).\n",
"published": "2025-07-14T08:08:46.470467Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-07-14T08:08:46.470479Z",
"modified": "2025-07-14T08:08:46.473565Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 315236,
"topic": "gcn.circulars",
"uuid": "ea463e89-5cea-4356-8a4b-4e76b40fe3f2",
"title": "The EP-WXT trigger 01709179435 is likely a new outburst of the CV SS Cyg",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40847"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709179435 is likely a new outburst of the CV SS Cyg",
"createdOn": 1750998486654,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40847,
"submittedHow": "web"
},
"message_text": "B.-T. Wang (YNAO,CAS), J. H. Wu (GZHU), W. F. Wen(SZTU), J. W. Hu, Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709179435 at the time of 2025-06-27T03:38:47, is likely a new outburst associated with CV SS Cyg. The estimated flux of the outburst is around 2e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 3e+32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).\n",
"published": "2025-06-29T06:22:11.106102Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:11.106119Z",
"modified": "2025-06-29T06:22:11.109809Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 315204,
"topic": "gcn.circulars",
"uuid": "085b184a-223e-4e8b-b3e7-adff0e6ff5fd",
"title": "The EP-WXT trigger 01709179396 is likely a flaring star CSTAR 38580",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40821"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709179396 is likely a flaring star CSTAR 38580",
"createdOn": 1750850878676,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40821,
"submittedHow": "web"
},
"message_text": "H. Zhou (PMO), W. X. Wang (NAO, CAS), J. H. Wu (GZHU), W. F. Wen(SZTU), W. D. Zhang(NAO, CAS), report on behalf of the Einstein Probe team:\n\nThe EP-WXT trigger 01709179396 at the time of 2025-06-25T09:21:20, is likely a stellar flare associated with CSTAR 38580. The estimated flux of the flare is around 8 x 10^-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 3.2 x 10^31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).\n",
"published": "2025-06-29T06:22:10.832208Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:10.832221Z",
"modified": "2025-06-29T06:22:10.835353Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 421123,
"topic": "gcn.circulars",
"uuid": "9e857821-44f8-49bd-99af-ef83bf1c0c8f",
"title": "The EP-WXT trigger 01709179396 is likely a flaring star CSTAR 38580",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40821"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40821....1Z",
"subject": "The EP-WXT trigger 01709179396 is likely a flaring star CSTAR 38580",
"createdOn": 1750850878676,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40821,
"submittedHow": "web"
},
"message_text": "H. Zhou (PMO), W. X. Wang (NAO, CAS), J. H. Wu (GZHU), W. F. Wen(SZTU), W. D. Zhang(NAO, CAS), report on behalf of the Einstein Probe team:\n\nThe EP-WXT trigger 01709179396 at the time of 2025-06-25T09:21:20, is likely a stellar flare associated with CSTAR 38580. The estimated flux of the flare is around 8 x 10^-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 3.2 x 10^31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).\n",
"published": "2025-07-14T08:08:15.676430Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-07-14T08:08:15.676442Z",
"modified": "2025-07-14T08:08:15.679984Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 421025,
"topic": "gcn.circulars",
"uuid": "f4d9097c-aafa-402b-af0d-396c99247c6f",
"title": "The EP-WXT trigger 01709179071 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40797"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40797....1M",
"subject": "The EP-WXT trigger 01709179071 is likely a flaring star",
"createdOn": 1750453168131,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40797,
"submittedHow": "web"
},
"message_text": "X. Mao, Y. J. Song, T. Zhao, Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709179071 at the time of 2025-06-20T19:46:46, is likely a stellar flare associated with 2MASS J21370885-6036054. The estimated flux of the flare is around 1e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.4e31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-07-14T08:07:51.602139Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-07-14T08:07:51.602157Z",
"modified": "2025-07-14T08:07:51.620116Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 315178,
"topic": "gcn.circulars",
"uuid": "21e532ff-132b-4f49-8667-e4a2479a833c",
"title": "The EP-WXT trigger 01709179071 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40797"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709179071 is likely a flaring star",
"createdOn": 1750453168131,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40797,
"submittedHow": "web"
},
"message_text": "X. Mao, Y. J. Song, T. Zhao, Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709179071 at the time of 2025-06-20T19:46:46, is likely a stellar flare associated with 2MASS J21370885-6036054. The estimated flux of the flare is around 1e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.4e31 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:10.617458Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:10.617478Z",
"modified": "2025-06-29T06:22:10.620398Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 330218,
"topic": "gcn.circulars",
"uuid": "12799535-5c83-4821-9396-d7f58f83e0f5",
"title": "The EP-WXT trigger 01709178990 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40764"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40764....1L",
"subject": "The EP-WXT trigger 01709178990 is likely a flaring star",
"createdOn": 1750210417145,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40764,
"submittedHow": "web"
},
"message_text": "Y.-F. Liang (PMO, CAS), R.-Z. Li (YNAO, CAS), X.-L. Chen (YNU), H.-Z. Wu (HUST), X.-P. Xu and W.-M. Yuan (NAOC) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178990 at the time of 2025-06-17T20:58:00, is likely a stellar flare associated with GQ Lup (Orion Variable). The estimated flux of the flare is around 8 X 10^-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.2 X 10^32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-30T08:08:46.076829Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-30T08:08:46.076842Z",
"modified": "2025-06-30T08:08:46.079523Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 315144,
"topic": "gcn.circulars",
"uuid": "3f353edc-e888-4a49-bf60-112dbf65c784",
"title": "The EP-WXT trigger 01709178990 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40764"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178990 is likely a flaring star",
"createdOn": 1750210417145,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40764,
"submittedHow": "web"
},
"message_text": "Y.-F. Liang (PMO, CAS), R.-Z. Li (YNAO, CAS), X.-L. Chen (YNU), H.-Z. Wu (HUST), X.-P. Xu and W.-M. Yuan (NAOC) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178990 at the time of 2025-06-17T20:58:00, is likely a stellar flare associated with GQ Lup (Orion Variable). The estimated flux of the flare is around 8 X 10^-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.2 X 10^32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:10.342122Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:10.342135Z",
"modified": "2025-06-29T06:22:10.345011Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 315129,
"topic": "gcn.circulars",
"uuid": "ff21f4f6-8a61-41b4-8675-544849e9539e",
"title": "The EP-WXT trigger 01709178975 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40754"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178975 is likely a flaring star",
"createdOn": 1750161378210,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40754,
"submittedHow": "web"
},
"message_text": "X. L. Chen (YNU), H. Z. Wu (HUST), Y. P. Zhou (NJU), Y. Q. Zhao (USTC, PRIC), J. W. Hu, Y. Liu (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178975 at the time of 2025-06-17T11:22:06, is likely a stellar flare associated with CD-32 11039. The estimated flux of the flare is around 1e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.9e32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:10.221872Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:10.221884Z",
"modified": "2025-06-29T06:22:10.225056Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 242801,
"topic": "gcn.circulars",
"uuid": "f9be6de2-1668-46b6-9caf-1fee6df3d058",
"title": "The EP-WXT trigger 01709178975 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40754"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"eventId": "EP-WXT 01709178975",
"subject": "The EP-WXT trigger 01709178975 is likely a flaring star",
"version": 2,
"editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
"editedOn": 1750176418211,
"createdOn": 1750161378210,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40754,
"submittedHow": "web"
},
"message_text": "X. L. Chen (YNU), H. Z. Wu (HUST), Y. P. Zhou (NJU), Y. Q. Zhao (USTC, PRIC), J. W. Hu, Y. Liu (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178975 at the time of 2025-06-17T11:22:06, is likely a stellar flare associated with CD-32 11039. The estimated flux of the flare is around 1e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.9e32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-17T16:06:59.460787Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-17T16:06:59.460807Z",
"modified": "2025-06-17T16:06:59.467438Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 330192,
"topic": "gcn.circulars",
"uuid": "72adb6d2-e6f3-43b5-8703-22a52418f9d3",
"title": "The EP-WXT trigger 01709178975 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40754"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40754....1C",
"eventId": "EP-WXT 01709178975",
"subject": "The EP-WXT trigger 01709178975 is likely a flaring star",
"version": 2,
"editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
"editedOn": 1750176418211,
"createdOn": 1750161378210,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40754,
"submittedHow": "web"
},
"message_text": "X. L. Chen (YNU), H. Z. Wu (HUST), Y. P. Zhou (NJU), Y. Q. Zhao (USTC, PRIC), J. W. Hu, Y. Liu (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178975 at the time of 2025-06-17T11:22:06, is likely a stellar flare associated with CD-32 11039. The estimated flux of the flare is around 1e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.9e32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-30T08:08:45.896363Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-30T08:08:45.896376Z",
"modified": "2025-06-30T08:08:45.898867Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 241649,
"topic": "gcn.circulars",
"uuid": "087199b7-fa16-42e6-97e7-541c3efe34a1",
"title": "The EP-WXT trigger 01709178975 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40754"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178975 is likely a flaring star",
"createdOn": 1750161378210,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40754,
"submittedHow": "web"
},
"message_text": "X. L. Chen (YNU), H. Z. Wu (HUST), Y. P. Zhou (NJU), Y. Q. Zhao (USTC, PRIC), J. W. Hu, Y. Liu (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178975 at the time of 2025-06-17T11:22:06, is likely a stellar flare associated with CD-32 11039. The estimated flux of the flare is around 1e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.9e32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-17T13:39:45.778541Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-17T13:39:45.778550Z",
"modified": "2025-06-17T13:39:45.782099Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 315135,
"topic": "gcn.circulars",
"uuid": "75815381-418d-45ce-a826-84a95a589c01",
"title": "The EP-WXT trigger 01709178975 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40754"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"eventId": "EP-WXT 01709178975",
"subject": "The EP-WXT trigger 01709178975 is likely a flaring star",
"version": 2,
"editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
"editedOn": 1750176418211,
"createdOn": 1750161378210,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40754,
"submittedHow": "web"
},
"message_text": "X. L. Chen (YNU), H. Z. Wu (HUST), Y. P. Zhou (NJU), Y. Q. Zhao (USTC, PRIC), J. W. Hu, Y. Liu (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178975 at the time of 2025-06-17T11:22:06, is likely a stellar flare associated with CD-32 11039. The estimated flux of the flare is around 1e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.9e32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:10.267931Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:10.267944Z",
"modified": "2025-06-29T06:22:10.270961Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 241648,
"topic": "gcn.circulars",
"uuid": "44e9352d-0b96-4823-b94e-abdd4fc42dd3",
"title": "The EP-WXT trigger 01709178975 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40754"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178975 is likely a flaring star",
"createdOn": 1750161378210,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40754,
"submittedHow": "web"
},
"message_text": "X. L. Chen (YNU), H. Z. Wu (HUST), Y. P. Zhou (NJU), Y. Q. Zhao (USTC, PRIC), J. W. Hu, Y. Liu (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178975 at the time of 2025-06-17T11:22:06, is likely a stellar flare associated with CD-32 11039. The estimated flux of the flare is around 1e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.9e32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-17T13:39:45.767440Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-17T13:39:45.767452Z",
"modified": "2025-06-17T13:39:45.773703Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 315130,
"topic": "gcn.circulars",
"uuid": "29faaabd-aaeb-44a4-a909-dcb28fff39f0",
"title": "The EP-WXT trigger 01709178975 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40754"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178975 is likely a flaring star",
"createdOn": 1750161378210,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40754,
"submittedHow": "web"
},
"message_text": "X. L. Chen (YNU), H. Z. Wu (HUST), Y. P. Zhou (NJU), Y. Q. Zhao (USTC, PRIC), J. W. Hu, Y. Liu (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178975 at the time of 2025-06-17T11:22:06, is likely a stellar flare associated with CD-32 11039. The estimated flux of the flare is around 1e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.9e32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:10.229653Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:10.229665Z",
"modified": "2025-06-29T06:22:10.232864Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 330252,
"topic": "gcn.circulars",
"uuid": "36d068fc-2ff6-4bf1-b193-b970a0f740bc",
"title": "The EP-WXT trigger 01709178875 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40740"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40740....1Z",
"subject": "The EP-WXT trigger 01709178875 is likely a flaring star",
"createdOn": 1750047429731,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40740,
"submittedHow": "web"
},
"message_text": "Y.Q.Zhao(USTC,PRIC),Y.P.Zhou(NJU),X.L.Chen(YNU),M.J.Liu,C.C.Jin(NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178875 at the time of 2025-06-15T16:06:24, is likely a stellar flare associated with T Tauri Star SZ 67. The estimated flux of the flare is around 1.18e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.51e32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-30T08:08:52.320035Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-30T08:08:52.320047Z",
"modified": "2025-06-30T08:08:52.322621Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 315114,
"topic": "gcn.circulars",
"uuid": "abe37774-1f9a-437b-9c20-75e34fa6fffe",
"title": "The EP-WXT trigger 01709178875 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40740"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178875 is likely a flaring star",
"createdOn": 1750047429731,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40740,
"submittedHow": "web"
},
"message_text": "Y.Q.Zhao(USTC,PRIC),Y.P.Zhou(NJU),X.L.Chen(YNU),M.J.Liu,C.C.Jin(NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178875 at the time of 2025-06-15T16:06:24, is likely a stellar flare associated with T Tauri Star SZ 67. The estimated flux of the flare is around 1.18e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.51e32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:10.088418Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:10.088430Z",
"modified": "2025-06-29T06:22:10.091642Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 232797,
"topic": "gcn.circulars",
"uuid": "60961548-7e80-42ef-bb3e-49a52c84dfa6",
"title": "The EP-WXT trigger 01709178875 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40740"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178875 is likely a flaring star",
"createdOn": 1750047429731,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40740,
"submittedHow": "web"
},
"message_text": "Y.Q.Zhao(USTC,PRIC),Y.P.Zhou(NJU),X.L.Chen(YNU),M.J.Liu,C.C.Jin(NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709178875 at the time of 2025-06-15T16:06:24, is likely a stellar flare associated with T Tauri Star SZ 67. The estimated flux of the flare is around 1.18e-10 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 1.51e32 erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-16T04:55:10.400393Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-16T04:55:10.400413Z",
"modified": "2025-06-16T04:55:10.407391Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 315019,
"topic": "gcn.circulars",
"uuid": "c6c18f97-07b6-4fef-8eb1-00d6b59cfcd1",
"title": "The EP-WXT trigger 01709178283 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40656"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178283 is likely a flaring star",
"createdOn": 1749486339460,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40656,
"submittedHow": "web"
},
"message_text": "Y. L. Wang (NAO, CAS; ICE, CSIC-IEEC), H. N. Yang (NAO, CAS), Y. F. Liang (PMO, CAS), Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709178283 at 2025-06-09 15:02:00 (UTC) is likely a stellar flare associated with RX J1204.6-7731. The estimated flux of the flare is around 5 x 10^-11 erg/s/cm^2 in 0.5-10 keV, corresponding to an X-ray luminosity of around 6 x 10^31 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:09.258892Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:09.258904Z",
"modified": "2025-06-29T06:22:09.261792Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 330303,
"topic": "gcn.circulars",
"uuid": "6d083e80-5b7e-42e2-adf5-c38f21dfb0e5",
"title": "The EP-WXT trigger 01709178283 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40656"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40656....1W",
"subject": "The EP-WXT trigger 01709178283 is likely a flaring star",
"createdOn": 1749486339460,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40656,
"submittedHow": "web"
},
"message_text": "Y. L. Wang (NAO, CAS; ICE, CSIC-IEEC), H. N. Yang (NAO, CAS), Y. F. Liang (PMO, CAS), Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709178283 at 2025-06-09 15:02:00 (UTC) is likely a stellar flare associated with RX J1204.6-7731. The estimated flux of the flare is around 5 x 10^-11 erg/s/cm^2 in 0.5-10 keV, corresponding to an X-ray luminosity of around 6 x 10^31 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-30T08:09:37.074787Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-30T08:09:37.074799Z",
"modified": "2025-06-30T08:09:37.077463Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 203109,
"topic": "gcn.circulars",
"uuid": "e1512fa4-b075-4401-98c5-213a13635ca5",
"title": "The EP-WXT trigger 01709178283 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40656"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178283 is likely a flaring star",
"createdOn": 1749486339460,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40656,
"submittedHow": "web"
},
"message_text": "Y. L. Wang (NAO, CAS; ICE, CSIC-IEEC), H. N. Yang (NAO, CAS), Y. F. Liang (PMO, CAS), Z. X. Ling (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709178283 at 2025-06-09 15:02:00 (UTC) is likely a stellar flare associated with RX J1204.6-7731. The estimated flux of the flare is around 5 x 10^-11 erg/s/cm^2 in 0.5-10 keV, corresponding to an X-ray luminosity of around 6 x 10^31 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-09T16:25:45.998503Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-09T16:25:45.998525Z",
"modified": "2025-06-09T16:25:46.017530Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 314902,
"topic": "gcn.circulars",
"uuid": "e3b60ee4-7252-43e8-afb2-aa51d9b46987",
"title": "The EP-WXT trigger 01709178244 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40649"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178244 is likely a flaring star",
"createdOn": 1749361319135,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40649,
"submittedHow": "web"
},
"message_text": "D. F. Hu (PMO, CAS), Q. C. Liu (THU), B. B. Zhang (BNU), Y. Liu (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709178244 at the time of 2025-06-08T04:53:30 (UTC), is likely a stellar flare associated with Gaia DR3 6730332160799599744. The estimated flux of the flare is around 1.6 x 10^-10 erg/s/cm^2 in 0.5-4 keV, corresponding to an X-ray luminosity of around 3.3 x 10^32 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:08.230709Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:08.230728Z",
"modified": "2025-06-29T06:22:08.233879Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 330165,
"topic": "gcn.circulars",
"uuid": "c346e6f6-a59f-4f01-a2cc-52a33405b823",
"title": "The EP-WXT trigger 01709178244 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40649"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40649....1H",
"subject": "The EP-WXT trigger 01709178244 is likely a flaring star",
"createdOn": 1749361319135,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40649,
"submittedHow": "web"
},
"message_text": "D. F. Hu (PMO, CAS), Q. C. Liu (THU), B. B. Zhang (BNU), Y. Liu (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709178244 at the time of 2025-06-08T04:53:30 (UTC), is likely a stellar flare associated with Gaia DR3 6730332160799599744. The estimated flux of the flare is around 1.6 x 10^-10 erg/s/cm^2 in 0.5-4 keV, corresponding to an X-ray luminosity of around 3.3 x 10^32 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-30T08:08:41.698208Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-30T08:08:41.698222Z",
"modified": "2025-06-30T08:08:41.700823Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 202664,
"topic": "gcn.circulars",
"uuid": "20898809-e627-427f-817a-41751bc29e18",
"title": "The EP-WXT trigger 01709178244 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40649"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178244 is likely a flaring star",
"createdOn": 1749361319135,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40649,
"submittedHow": "web"
},
"message_text": "D. F. Hu (PMO, CAS), Q. C. Liu (THU), B. B. Zhang (BNU), Y. Liu (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709178244 at the time of 2025-06-08T04:53:30 (UTC), is likely a stellar flare associated with Gaia DR3 6730332160799599744. The estimated flux of the flare is around 1.6 x 10^-10 erg/s/cm^2 in 0.5-4 keV, corresponding to an X-ray luminosity of around 3.3 x 10^32 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-08T05:42:05.635213Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-08T05:42:05.635223Z",
"modified": "2025-06-08T05:42:05.644099Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 330180,
"topic": "gcn.circulars",
"uuid": "206de69c-a3d5-4b46-9d51-fa5e340380ec",
"title": "The EP-WXT trigger 01709178069 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40646"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40646....1H",
"subject": "The EP-WXT trigger 01709178069 is likely a flaring star",
"createdOn": 1749261514331,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40646,
"submittedHow": "web"
},
"message_text": "D. F. Hu, Y. Wang (PMO, CAS), H. Sun, W. D. Zhang (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709178069 at the time of 2025-06-06T23:38:19 (UTC), is likely a stellar flare associated with UCAC4 204-077663. The estimated flux of the flare is around 8 x 10^-11 erg/s/cm^2 in 0.5-4 keV, corresponding to an X-ray luminosity of around 1.1 x 10^32 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).\n",
"published": "2025-06-30T08:08:45.815338Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-30T08:08:45.815356Z",
"modified": "2025-06-30T08:08:45.818266Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 314899,
"topic": "gcn.circulars",
"uuid": "4ac59ef8-b709-4869-bfa6-a457047a827d",
"title": "The EP-WXT trigger 01709178069 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40646"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178069 is likely a flaring star",
"createdOn": 1749261514331,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40646,
"submittedHow": "web"
},
"message_text": "D. F. Hu, Y. Wang (PMO, CAS), H. Sun, W. D. Zhang (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709178069 at the time of 2025-06-06T23:38:19 (UTC), is likely a stellar flare associated with UCAC4 204-077663. The estimated flux of the flare is around 8 x 10^-11 erg/s/cm^2 in 0.5-4 keV, corresponding to an X-ray luminosity of around 1.1 x 10^32 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).\n",
"published": "2025-06-29T06:22:08.206626Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:08.206638Z",
"modified": "2025-06-29T06:22:08.209668Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 202407,
"topic": "gcn.circulars",
"uuid": "838765d7-abd2-4d8b-9ec4-bd1f7e61d150",
"title": "The EP-WXT trigger 01709178069 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40646"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709178069 is likely a flaring star",
"createdOn": 1749261514331,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40646,
"submittedHow": "web"
},
"message_text": "D. F. Hu, Y. Wang (PMO, CAS), H. Sun, W. D. Zhang (NAO, CAS) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709178069 at the time of 2025-06-06T23:38:19 (UTC), is likely a stellar flare associated with UCAC4 204-077663. The estimated flux of the flare is around 8 x 10^-11 erg/s/cm^2 in 0.5-4 keV, corresponding to an X-ray luminosity of around 1.1 x 10^32 erg/s. \n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).\n",
"published": "2025-06-07T01:58:42.729866Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-07T01:58:42.729878Z",
"modified": "2025-06-07T01:58:42.737216Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 202149,
"topic": "gcn.circulars",
"uuid": "825f8cf8-85d3-4397-8619-3011c3c770f6",
"title": "The EP-WXT trigger 01709177873 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40635"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709177873 is likely a flaring star",
"createdOn": 1749178408631,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40635,
"submittedHow": "web"
},
"message_text": "T. Y. Lian, R. D. Liang (NAOC), H. L. Peng (NNU), T. C. Zheng (PMO), W. Yuan (NAOC) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709177873 at the time of 2025-06-05T18:51:47, is likely a stellar flare associated with RX J1553.0+4457. The estimated flux of the flare is around 1.2e-10 erg/s/cm^2 in 0.5-10.0 keV, corresponding to an X-ray luminosity of around 2e31 erg/s. Launched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-06T02:53:38.175624Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-06T02:53:38.175637Z",
"modified": "2025-06-06T02:53:38.190325Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 314885,
"topic": "gcn.circulars",
"uuid": "72354a87-3872-4802-8d93-758cc52f22cf",
"title": "The EP-WXT trigger 01709177873 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40635"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709177873 is likely a flaring star",
"createdOn": 1749178408631,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40635,
"submittedHow": "web"
},
"message_text": "T. Y. Lian, R. D. Liang (NAOC), H. L. Peng (NNU), T. C. Zheng (PMO), W. Yuan (NAOC) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709177873 at the time of 2025-06-05T18:51:47, is likely a stellar flare associated with RX J1553.0+4457. The estimated flux of the flare is around 1.2e-10 erg/s/cm^2 in 0.5-10.0 keV, corresponding to an X-ray luminosity of around 2e31 erg/s. Launched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:08.088983Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:08.088995Z",
"modified": "2025-06-29T06:22:08.092221Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 314996,
"topic": "gcn.circulars",
"uuid": "4aff02f7-6609-45d0-a87d-0659bc0524f6",
"title": "The EP-WXT trigger 01709177873 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40635"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40635....1L",
"subject": "The EP-WXT trigger 01709177873 is likely a flaring star",
"createdOn": 1749178408631,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40635,
"submittedHow": "web"
},
"message_text": "T. Y. Lian, R. D. Liang (NAOC), H. L. Peng (NNU), T. C. Zheng (PMO), W. Yuan (NAOC) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709177873 at the time of 2025-06-05T18:51:47, is likely a stellar flare associated with RX J1553.0+4457. The estimated flux of the flare is around 1.2e-10 erg/s/cm^2 in 0.5-10.0 keV, corresponding to an X-ray luminosity of around 2e31 erg/s. Launched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:09.041719Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:09.041738Z",
"modified": "2025-06-29T06:22:09.045222Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 203011,
"topic": "gcn.circulars",
"uuid": "c4e4e079-2053-4330-9c6b-dccf17b53bdf",
"title": "The EP-WXT trigger 01709177873 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40635"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40635....1L",
"subject": "The EP-WXT trigger 01709177873 is likely a flaring star",
"createdOn": 1749178408631,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40635,
"submittedHow": "web"
},
"message_text": "T. Y. Lian, R. D. Liang (NAOC), H. L. Peng (NNU), T. C. Zheng (PMO), W. Yuan (NAOC) on behalf of the Einstein Probe (EP) team: \n\nThe EP-WXT trigger 01709177873 at the time of 2025-06-05T18:51:47, is likely a stellar flare associated with RX J1553.0+4457. The estimated flux of the flare is around 1.2e-10 erg/s/cm^2 in 0.5-10.0 keV, corresponding to an X-ray luminosity of around 2e31 erg/s. Launched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-09T08:08:59.046866Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-09T08:08:59.046874Z",
"modified": "2025-06-09T08:08:59.053152Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 203012,
"topic": "gcn.circulars",
"uuid": "b94fdf54-b859-4deb-955f-b499742d9b6d",
"title": "The EP-WXT trigger 01709177837 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40628"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40628....1J",
"subject": "The EP-WXT trigger 01709177837 is likely a flaring star",
"createdOn": 1749116478489,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40628,
"submittedHow": "web"
},
"message_text": "S. Q. Jiang (NAOC), T. C. Zheng (PMO), X. Y. Zhou (PRIC), H. W. Pan (NAOC) on behalf of the Einstein Probe (EP) team:\nThe EP-WXT trigger 01709177837 at the time of 2025-06-05T09:24:19, is likely a stellar flare associated with RV Crt. The estimated flux of the flare is around 8e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4e32 erg/s.\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-09T08:08:59.059537Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-09T08:08:59.059546Z",
"modified": "2025-06-09T08:08:59.065355Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 201952,
"topic": "gcn.circulars",
"uuid": "51fa4197-7e5d-4502-9812-a932c1e0547c",
"title": "The EP-WXT trigger 01709177837 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40628"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709177837 is likely a flaring star",
"createdOn": 1749116478489,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40628,
"submittedHow": "web"
},
"message_text": "S. Q. Jiang (NAOC), T. C. Zheng (PMO), X. Y. Zhou (PRIC), H. W. Pan (NAOC) on behalf of the Einstein Probe (EP) team:\nThe EP-WXT trigger 01709177837 at the time of 2025-06-05T09:24:19, is likely a stellar flare associated with RV Crt. The estimated flux of the flare is around 8e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4e32 erg/s.\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-05T09:41:26.850099Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-05T09:41:26.850112Z",
"modified": "2025-06-05T09:41:26.863057Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 314997,
"topic": "gcn.circulars",
"uuid": "9a885de6-2173-4ae0-9302-a6bc8c4dfe3e",
"title": "The EP-WXT trigger 01709177837 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40628"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40628....1J",
"subject": "The EP-WXT trigger 01709177837 is likely a flaring star",
"createdOn": 1749116478489,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40628,
"submittedHow": "web"
},
"message_text": "S. Q. Jiang (NAOC), T. C. Zheng (PMO), X. Y. Zhou (PRIC), H. W. Pan (NAOC) on behalf of the Einstein Probe (EP) team:\nThe EP-WXT trigger 01709177837 at the time of 2025-06-05T09:24:19, is likely a stellar flare associated with RV Crt. The estimated flux of the flare is around 8e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4e32 erg/s.\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:09.051471Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:09.051490Z",
"modified": "2025-06-29T06:22:09.055573Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 314878,
"topic": "gcn.circulars",
"uuid": "00d5869d-cab5-494e-bf16-af8b5f4642a8",
"title": "The EP-WXT trigger 01709177837 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40628"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"subject": "The EP-WXT trigger 01709177837 is likely a flaring star",
"createdOn": 1749116478489,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40628,
"submittedHow": "web"
},
"message_text": "S. Q. Jiang (NAOC), T. C. Zheng (PMO), X. Y. Zhou (PRIC), H. W. Pan (NAOC) on behalf of the Einstein Probe (EP) team:\nThe EP-WXT trigger 01709177837 at the time of 2025-06-05T09:24:19, is likely a stellar flare associated with RV Crt. The estimated flux of the flare is around 8e-11 erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 4e32 erg/s.\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-29T06:22:08.028644Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-29T06:22:08.028657Z",
"modified": "2025-06-29T06:22:08.031870Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 203005,
"topic": "gcn.circulars",
"uuid": "d2ca9418-7acc-4af8-ab61-5f59d8d0aa81",
"title": "The EP-WXT trigger 01709177124 is likely a flaring star",
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"authors": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"data": {
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/40568"
},
"format": "text/plain",
"$schema": "https://gcn.nasa.gov/schema/v4.4.0/gcn/circulars.schema.json",
"bibcode": "2025GCN.40568....1H",
"subject": "The EP-WXT trigger 01709177124 is likely a flaring star",
"createdOn": 1748491207015,
"submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
"circularId": 40568,
"submittedHow": "web"
},
"message_text": "D. F. Hu (PMO, CAS), S. Q. Jiang, W. X. Wang, Y. J. Song, C. C. Jin (NAO, CAS) on behalf of the Einstein Probe (EP) team:\n\nThe EP-WXT trigger 01709177124 at the time of 2025-05-28T16:45:02, is likely a stellar flare associated with Gaia DR3 5778356748440163840. The estimated flux of the flare is around 1.4 x 10^(-10) erg/s/cm^2 in 0.5-4.0 keV, corresponding to an X-ray luminosity of around 2.5 x 10^(31) erg/s.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
"published": "2025-06-09T08:08:58.967879Z",
"message_parser": "GCN Circular Parser v2",
"retracted": false,
"created": "2025-06-09T08:08:58.967887Z",
"modified": "2025-06-09T08:08:58.973810Z",
"nonlocalizedevents": [],
"targets": []
}
]
}
