GCN Circular 11512
Subject
GRB 110102A: Fermi GBM observation
Date
2011-01-03T05:45:05Z (13 years ago)
From
Lin Lin at UAH/NAOC <ll0005@uah.edu>
Lin Lin (UAH)
report on behalf of the Fermi GBM Team:
"At 18:54:36.00 UT on 2 Jan. 2011, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 110102A (trigger 315687278 / 110102788).
which was also detected by the Swift/BAT
(S. R. Oates et al. 2011, GCN 11509)
The GBM on-ground location is consistent with the Swift position.
The GBM light curve shows of several peaks
with a duration (T90) of about 254 s (50-300 keV).
The T90 starts at T0-119 s.
The time-averaged spectrum from T0-123 s to T0+149 s is
well fit by
a power law function with an exponential
high-energy cutoff. The power law index is -1.49 +/- 0.02 and
the cutoff energy, parameterized as Epeak, is 476.6 +/- 68.7 keV
The event fluence (10-1000 keV) in this time interval is
(4.39 +/- 0.09)E-5 erg/cm^2. The 1 sec peak photon flux measured
starting from T0+78 s in the 10-1000 keV band
is 14.07 +/- 0.35 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."