GCN Circular 18828
Subject
GRB 160104A: Fermi GBM observation
Date
2016-01-05T03:25:03Z (8 years ago)
From
Eric Burns at U of Alabama <eb0016@uah.edu>
R. Hamburg (UAH) and Hoi-Fung Yu (MPE)
report on behalf of the Fermi GBM Team:
"At 11:24:13.22 UT on 04 January 2016, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 160104A (trigger 473599457 / 160104475), which
was also detected by the Swift/BAT (A. Melandri et al. 2016, GCN 18815).
The GBM on-ground location is consistent with the Swift position.
The angle from the Fermi LAT boresight at the GBM trigger time is 104
degrees.
The GBM light curve consists of one main peak
with a duration (T90) of about 10 s (50-300 keV).
The time-averaged spectrum from T0-3.200 s to T0+0.128 s is
adequately fit by a simple power law function with index -1.7 +/- 0.1.
The event fluence (10-1000 keV) in this time interval is
(6.1 +/- 0.7)E-07 erg/cm^2. The 1-sec peak photon flux measured
starting from T0-1.92 s in the 10-1000 keV band
is 1.7 +/- 0.2 ph/s/cm^2.
The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog."