{
  "format": "text/plain",
  "eventId": "GRB 261024C",
  "eventType": [
    "GRB",
    "X-ray Transient"
  ],
  "submitter": "Gaurav Waratkar at Caltech <gauravwaratkar@iitb.ac.in>",
  "body": "G. Waratkar (Caltech) and B. Grefenstette (Caltech) report on behalf of the NuSTAR Search for INteresting Gamma-ray Signals (SINGS) working group:\n\nThe NuSTAR SINGS working group reports the detection of prompt emission from the long-duration GRB 261024C in both the NuSTAR CsI anti-coincidence shields. This GRB was identified through a blind search using the CsI shield rates. Details of the search algorithm will be described in a future paper.\n\nThe NuSTAR SINGS algorithm triggered at 2026-10-24T18:24:12.000 UTC shows a detection of GRB 261024C, also detected by KONUS-Wind (GCN Notices) and AstroSat-CZTI (GCN 46039).\n\nThe NuSTAR CsI shield data are recorded at 1 Hz. We detect a double-peaked burst lasting for about 40-s. The peak count rate is ~1800-cps with a baseline rate of ~1000-cps during this time period. We do not see any evidence in the signal above 100 keV in the CZT detectors.\n\nLightcurves and analysis for this GRB can be found here:\nhttps://nustarsoc.caltech.edu/NuSTAR_Public/grbs/reports/2026/261024C \n\nInformation on NuSTAR SINGS can be found here: \nhttps://nustarsoc.caltech.edu/NuSTAR_Public/grbs/     \n\nNuSTAR is a NASA Small Explorer mission led by Caltech and managed by JPL for NASA's Science Mission Directorate in Washington.\n",
  "subject": "GRB 261024C: NuSTAR detection of prompt emission",
  "createdOn": 1793051751077,
  "submittedHow": "web",
  "circularId": 46050
}