{
  "bibcode": "2021GCN.30340....1V",
  "body": "A. von Kienlin (MPE) and C. Meegan (UAH) \nreport on behalf of the Fermi GBM Team:\n\n\"At 08:16:15.99 UT on 26 June 2021, the Fermi Gamma-Ray Burst Monitor (GBM)\ntriggered and located GRB 210626A (trigger 646388180 / 210626345), which was\nalso \ndetected by the Swift/BAT-GUANO (Tohuvavohu et al. 2021, GCN 30325).\nThe Fermi GBM Final Real-time Localization is consistent with the Swift\nposition.\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 73\ndegrees.\n\nThe GBM light curve shows a singel pulse with a duration (T90) of \nabout 34 s (50-300 keV). The time-averaged spectrum from T0-5.632 s \nto T0+29.184 s is best fit by a Band function with Epeak= 86 +/- 18 keV, \nalpha = -1.21 +/- 0.16 and beta = -2.25 +/- 0.24\n\nThe event fluence (10-1000 keV) in this time interval is\n(5.1 +/- 0.4)E-06 erg/cm^2. The 1.024-sec peak photon flux measured\nstarting from T0+5.696 s in the 10-1000 keV band\nis 3.40 +/- 0.24 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\nPage:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"",
  "circularId": 30340,
  "createdOn": 1624893908000,
  "email": "azk@mpe.mpg.de",
  "subject": "GRB 210626A: Fermi GBM observation",
  "submitter": "Andreas von Kienlin at MPE  <azk@mpe.mpg.de>",
  "eventId": "GRB 210626A"
}