GCN Circular 17021
Subject
GRB 141102A: Fermi GBM detection
Date
2014-11-03T00:51:53Z (10 years ago)
From
Binbin Zhang at UAH <binbin.zhang@uah.edu>
Bin-Bin Zhang (UAH) reports on behalf of the Fermi GBM Team:
"At 12:51:39.26 UT on the 2nd of November 2014, the Fermi Gamma-Ray Burst Monitor
��triggered and located GRB 141102A (trigger 436625502 / 141102536), which was also��
detected by Swift (Cummings 2014, GCN 17020). The GBM on-ground location, using��
the Fermi GBM trigger data, is consistent with the Swift location. The trigger resulted in
��an Autonomous Repoint Request (ARR) that was accepted and the spacecraft slewed
��to the GBM in-flight location. The angle from the Fermi LAT boresight is about 57 degrees.
The GBM light curve consists of two main peaks with a total duration (T90) of about
��2.62 s (50���300 keV). The time-averaged spectrum from T0���0.064 s to T0+2.56 s is��
well fit by a power law function with an exponential high-energy cutoff. The power law��
index is ���0.85 +/- 0.12 and the cutoff energy, parameterized as Epeak, is 770 +/- 243 keV.
The event fluence (10���1000 keV) in this time interval is (1.7 +/- 0.1)E���06 erg/cm^2. The
1-sec peak photon flux measured starting from T0+1.1 s in the 10���1000 keV band is��
5.0 +/- 0.2 ph/s/cm2.
The spectral analysis results presented above are preliminary; final results will be published
��in the GBM GRB Catalog."