{
  "submittedHow": "web",
  "eventType": [
    "GRB",
    "X-ray Transient"
  ],
  "submitter": "SVOM_group <svomgroup@bao.ac.cn>",
  "format": "text/plain",
  "subject": "GRB 261026A: SVOM/ECLAIRs refined analysis",
  "createdOn": 1793201501112,
  "eventId": "GRB 261026A",
  "circularId": 46068,
  "body": "GRB 261026A: SVOM/ECLAIRs refined analysis\n\nW. Xie (NAOC), N. Dagoneau (CEA), M. Brunet (IRAP), H. Goto (RIKEN/CEA), C. Plasse (HKU), C. Wu (NAOC), C. Wang (IHEP) report on behalf the SVOM/ECLAIRs team\n\nUsing the event-by-event data downloaded through the X-band ground station, we report further analysis of SVOM/ECLAIRs observations of GRB 261026A (SVOM burst-id sb26102601 – GCN 46030, trigger time T0 = 2026-10-26T06:09:37.68 UTC). \n\nThe burst that triggered ECLAIRs onboard shows a broad bump lightcurve. The burst duration is T90 = 26.7 +1.5/-1.6 s in the 4-120 keV energy band.\n\nThe time-averaged spectrum from T0-8.3 s to T0+18.4 s in the 4-120 keV energy range is well fitted by a powerlaw model  with alpha = -1.82 +/- 0.18. With this model, the 4-120 keV fluence is  (1.37 ± 0.18)e-6 erg/cm^2 and the 4-120 keV photon flux is 2.03 ± 0.13 ph/cm^2/s. \n\n\nAll the quoted errors are at the 68% confidence level.\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. ECLAIRs was developed jointly by CNES, CEA-IRFU, CNRS-IRAP, CNRS-APC.\n\nThe SVOM/ECLAIRs point of contact for this burst is: Wenjin Xie (NAOC) (xiewj@bao.ac.cn)\n"
}