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GCN Circular 26329

GRB 191202A: Fermi GBM observation
2019-12-03T17:48:19Z (4 years ago)
Peter Veres at UAH <>
P. Veres and C. Meegan (both UAH)
report on behalf of the Fermi GBM Team:

"At 20:48:51.23 UT on 2 December 2019, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 191202A (trigger 597012536 / 191202867)
which was also detected by the Fermi-LAT.
The GBM on-ground location is consistent with the LAT position.

The angle from the Fermi LAT boresight at the GBM trigger time is 12

The GBM light curve shows two pulses
with a duration (T90) of about 30.7 s (50-300 keV).
The time-averaged spectrum from T0-1.0 s to T0+18.4 s is
best fit by a Band function with Epeak = 190 +/- 19 keV,
alpha = -1.20 +/- 0.04, and beta = -2.05 +/- 0.08.

The event fluence (10-1000 keV) in this time interval is
(1.95 +/- 0.04)E-5 erg/cm^2. The 1-sec peak photon flux measured
starting from T0+9.0 s in the 10-1000 keV band
is 23.5 +/- 0.4 ph/s/cm^2.

The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog:

For Fermi GBM data and info, please visit the official Fermi GBM Support
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