[AAVSO-HEN] GRB 081213: Fermi GBM detection

[grb at aavso.org]

The following is a GCN Circular circulated via the AAVSO network.
For an archive and more information on circulars visit:
http://lheawww.gsfc.nasa.gov/docs/gamcosray/legr/bacodine/gcn3_archive.html

TITLE:   GCN CIRCULAR
NUMBER:  8668
SUBJECT: GRB 081213: Fermi GBM detection
DATE:    08/12/15 16:00:47 GMT
FROM:    Elisabetta Bissaldi at MPE  <ebs at mpe.mpg.de>

E. Bissaldi and A. von Kienlin (MPE)
report on behalf of the Fermi GBM Team: 

"At 04:09:41.64 UT on 13 December 2008, the Fermi Gamma-Ray Burst Monitor
triggered and located GRB 081213 (trigger 250834182 / 081213173).
The on-ground calculated location, using the GBM trigger data,
is RA = 25.5, Dec = -35.3 (J2000 degrees,
equivalent to 01h 42m, -35d 18'), with an uncertainty
of 12.5 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 is 51 degrees.

This short GRB consists of a single peak with a duration of about 50 ms.
Since the source is weak, the time-averaged spectrum is poorly constrained."