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 16452

GRB 140624A: Fermi GBM observation of a short burst
2014-06-24T19:23:39Z (10 years ago)
George A. Younes at USRA/NASA/MSFC <>
G. Younes (USRA/NASA-MSFC), A. von Kienlin (MPE), and C. Meegan (UAH)
report on behalf of the Fermi GBM Team:

"At 10:08:40.90 UT on 24 June 2014, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 140624A (trigger 425297323/140624423).

The trigger resulted in an Autonomous Repoint Request (ARR) that was
accepted and the spacecraft slewed to the GBM in-flight location.

The on-ground calculated location, using the GBM trigger
data, is RA = 23.16, DEC = -0.56 (J2000 degrees,
equivalent to 01h 32m, -00d 33'), with an uncertainty
of 4.6 degrees (radius, 1-sigma containment,
statistical only; there is additionally a systematic
error which is currently estimated to be 2 to 3 degrees).

The angle from the Fermi LAT boresight, using the GBM on-ground
calculated location, is 54 degrees.

The GBM light curve consists of a single peak
with a duration of about 0.1 s (50-300 keV).
The time-averaged spectrum from T0-0.064 s to T0+0.064 s is
adequately fit by a Comptonized function with Epeak = 365 +/- 81 keV,
and alpha = -0.8 +/- 0.1.

The event fluence (10-1000 keV) in this time interval is
(3.0 +/- 0.3)E-07 erg/cm^2. The 0.064 second peak photon flux
measured starting from T0+0.0 s in the 10-1000 keV band
is 19.2 +/- 1.3 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