{
  "eventType": [
    "GRB",
    "Gamma-ray Transient"
  ],
  "circularId": 46130,
  "eventId": "GRB 261102A",
  "submittedHow": "web",
  "submitter": "Rushikesh Sonawane  at IISER TVM <rushikesh23@iisertvm.ac.in>",
  "body": "R. Sonawane (IISER, TVM), and R. Hamburg (USRA) report on behalf of \nthe Fermi Gamma-ray Burst Monitor Team:\n\n\"At 06:09:19.31 UT on 02 November 2026, the Fermi Gamma-ray Burst Monitor (GBM) \ntriggered and located GRB 261102A (trigger 815292564/261102256).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, \nis RA = 102.1, Dec = 53.5 (J2000 degrees, equivalent to \nJ2000 6h 48m, +53d 30'), with a statistical uncertainty of 8.3 degrees. \n(radius, 1-sigma containment, statistical only; there is additionally a \nsystematic error which we have characterized as a mixture of two Gaussians, \none with a radius of 1.8 degrees (52% contribution) and one with a radius \nof 4.1 degrees (47% contribution) [A. Goldstein et al. 2020, ApJ, 895, 1]).\n\nThe angle from the Fermi LAT boresight is 27 degrees.\n\nThe GBM light curve consists of a single emission episode with a duration (T90) \nof about 0.7 s (50-300 keV). The time-averaged spectrum from T0-0.33 to T0+0.77 \ns is best fit by a power law function with an exponential high-energy cutoff. \nThe power law index is -0.37 +/- 0.04 and the cutoff energy, parameterized as \nEpeak, is 620 +/- 50 keV.\n\nThe event fluence (10-1000 keV) in this time interval is (5.1 +/- 0.6)E-07 \nerg/cm^2. The 64-ms peak photon flux measured starting from T0-0.06 s in the \n10-1000 keV band is 8 +/- 1 ph/s/cm^2. \n\nThe spectral analysis results presented above are preliminary; final results \nwill be published in the GBM GRB Catalog: \nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM Support Page: \nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "format": "text/plain",
  "subject": "GRB 261102A: Fermi GBM Detection",
  "createdOn": 1793644140799
}