{
  "body": "M. Brunet, J. Malzac, L. Bouchet, O. Godet (IRAP), C. Plasse (CEA), L.P. Xin (NAOC)\nreport on behalf of the SVOM mission team.\n\nSVOM/ECLAIRs triggered on the gamma-ray burst GRB 250328A (SVOM burst-id sb25032803) starting at 2025-03-28T16:56:56.3 UTC (Tb). The following trigger information was received on the ground with low latency by the SVOM VHF Alert Network.\n\nThe burst was only detected by the Count-Rate Trigger (CRT), which produced a sequence of 1 alert. CRT provided the alert with the best signal-to-noise-ratio (SNR) of 6.85 in the [8-120] keV energy band over a time window of 20.48 seconds starting at Tb.\n\nThe light curve showed a single peak with a duration of about 15s.\n\nThe localization of the best alert is R.A., Dec 215.9771, 25.8825 degrees:\nRA (J2000) = 14h23m54.51s\nDec (J2000) = 25d52m56.83s\nwith a 90% C.L. radius of 11.42 arcmin (including systematic error of 2 arcmin added in quadrature).\n\nNo immediate slew was performed on this burst, because its significance was below the slew threshold. A SVOM ToO will be performed. \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.\n\nThe Burst Advocate (BA) on shift for this burst is Marius Brunet: marius.brunet@irap.omp.eu.\nPlease contact the BA by email if you require additional information regarding the SVOM follow-up of this burst.\n",
  "circularId": 39910,
  "submitter": "SVOM_group <svomgroup@bao.ac.cn>",
  "format": "text/plain",
  "createdOn": 1743183136666,
  "bibcode": "2025GCN.39910....1B",
  "version": 2,
  "submittedHow": "web",
  "eventId": "GRB 250328A",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of SVOM_group <svomgroup@bao.ac.cn>",
  "editedOn": 1743184197719,
  "subject": "GRB 250328A: SVOM detection of a burst"
}