{
  "submittedHow": "web",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of SVOM_group <svomgroup@bao.ac.cn>",
  "createdOn": 1736135902907,
  "eventId": "GRB 250106A",
  "subject": " GRB 250106A: SVOM detection of a long burst",
  "editedOn": 1736174443555,
  "version": 2,
  "format": "text/plain",
  "bibcode": "2025GCN.38826....1Z",
  "body": "D.-H. ZHAO, C. WU, W.-J. XIE (NAOC, CAS), D. Turpin (CEA), S. Guillot (IRAP), D. Götz (CEA), C-W. Wang (IHEP) report on behalf of the SVOM team.\n\nThe SVOM/ECLAIRs telescope triggered and located the long duration GRB 250106A (sb25010601) starting at 2025-01-06T02:29:19.972 UTC (Tb).\n \nThe following trigger information was received on the ground with low-latency by the SVOM VHF Alert Network.\n \nThe burst was detected by both the on-board Count-Rate Trigger (CRT) and Image Trigger (IMT) and 8 alerts were received. The best detection is obtained by IMT with a signal-to-noise ratio of 8.94 in the 8-50 keV energy band over a time window of 20.48 s starting at Tb.\n \nThe localization of the best Alert is RA, Dec = 117.152, 63.770 (J2000), which is\nRA(J2000) = 07h 48m 36.480s\nDec(J2000)= +63d 46' 12.000'\nThe uncertainty on this position is 8.84 arcminutes at 90% C.L., which includes a systematic uncertainty of 2 arcminutes in quadrature.\n\nThe light curve shows one broad peak in 5-120 keV in ECLAIRs with a preliminary T90 duration of 93.64 s.\n\nThe SVOM/GRM light curve can be found here:\n https://www.bursthub.cn//admin/static/svgrb250106A.png\n\nSVOM slewed automatically on this burst. The information about MXT and VT observations will be reported later. \n\nThe Space 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.\n \nThe SVOM point of contact for this burst is: Donghua ZHAO(zhaodh@bao.ac.cn)\n \n",
  "circularId": 38826,
  "submitter": "SVOM_group <svomgroup@bao.ac.cn>"
}