{
  "eventId": "GRB 260714B",
  "createdOn": 1784084350355,
  "submitter": "oindabimukherjee@gmail.com",
  "subject": "GRB 260714B: Fermi GBM Detection",
  "format": "text/plain",
  "circularId": 45161,
  "body": "O. Mukherjee (USRA) reports on behalf of the Fermi Gamma-ray Burst Monitor Team:\n\n\"At 18:23:26.76 UT on 14 July 2026, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 260714B (trigger 805746211/260714766).\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 166.40, Dec = 46.66 (J2000 degrees, equivalent to\nJ2000 11h 5m, +46d 39'), with a statistical uncertainty of 4.01 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 56 degrees.\n\nThe GBM light curve consists of a single emission episode with multiple peaks, with a duration (T90) of about 12.5 s (50-300 keV). The time-averaged spectrum\nfrom T0+0.002 to T0+18.435 s is best fit by\na power law function with an exponential high-energy cutoff.\nThe power law index is -1.14 +/- 0.01 and the cutoff energy,\nparameterized as Epeak, is 660 +/- 3 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(2.51 +/- 0.02)E-05 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+5.2 s in the 10-1000 keV band is 17.1 +/- 0.3 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will 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/\"",
  "submittedHow": "web"
}