[vsnet-grb-info 16013] GRB 150110B: Fermi GBM Detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  17295
SUBJECT: GRB 150110B: Fermi GBM Detection
DATE:    15/01/11 06:03:26 GMT
FROM:    Matthew Stanbro at UAH/Fermi  <mcs0001 at uah.edu>

Matthew Stanbro (UAH) report on behalf of the Fermi GBM Team:

"At 22:08:31.91 UT on 10 January 2015, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 150110B (trigger 442620514 / 150110923)
which was also detected by the Swift/BAT (Evans et al. 2015, GCN 17291)
The GBM on-ground location is consistent with the Swift position.

The angle from the Fermi LAT boresight is 22 degrees.

The GBM light curve consists of 1 peak
with a duration (T90) of about 2 s (50-300 keV).
The time-averaged spectrum from T0-1.54 s to T0+1.54 s is
best fit by a power law function with an exponential
high-energy cutoff.  The power law index is -0.98 +/- 0.22 and
the cutoff energy, parameterized as Epeak, is 122.5 +/- 24.3 keV

The event fluence (10-1000 keV) in this time interval is
(5.30 +/- 0.61)E-07 erg/cm^2. The 1-sec peak photon flux measured
starting from T0-0.06 s in the 8-1000 keV band
is 2.33 +/- 0.21 ph/s/cm^2.

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