Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 14896

GRB 130612A: Fermi GBM observation
2013-06-14T18:06:06Z (11 years ago)
Gerard Fitzpatrick at UCD <>
G. Fitzpatrick (UCD) reports on behalf of the Fermi GBM Team:

At 03:22:23.36 UT on 12 June 2013, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 130612A (trigger 392700146/130612141)
which was also detected by the Swift/BAT (Racusin et al., GCN Circ. 14874).
The GBM on-ground location is consistent with the Swift position.

The GBM light curve consists of a single peak
with a duration (T90) of about 5.6 s (50-300 keV).
The time-averaged spectrum from T0-2.6 s to T0+2.3 s is
adequately fit by a power law function with an exponential
high-energy cutoff. The power law index is -1.3 +/- 0.3 and
the cutoff energy, parameterized as Epeak, is 61.9 +/- 10.5 keV.

The event fluence (10-1000 keV) in this time interval is
(5.7 +/- 0.6)E-07 erg/cm^2. The 1-sec peak photon flux measured
starting from T0-1.8 s in the 10-1000 keV band is 4.1 +/- 0.2 ph/s/cm^2.

The spectral analysis results presented above are preliminary;
final results will be published in the GBM GRB Catalog.
Looking for U.S. government information and services? Visit