[AAVSO-HEN] Fermi Gamma-ray Burst Monitor trigger 263649437 is not a GRB

[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:  9348
SUBJECT: Fermi Gamma-ray Burst Monitor trigger 263649437 is not a GRB
DATE:    09/05/11 16:02:58 GMT
FROM:    Arne Rau at MPE  <arau at mpe.mpg.de>

Arne Rau (MPE) and Michael Briggs (UAH), report on behalf of
the Fermi GBM Team:

“The Fermi Gamma-ray Burst Monitor (GBM) trigger 263649437 at 
11:57:15.99 UT
on 10 May 2009, tentatively classified as a GRB, is in fact not due
to a GRB. This trigger is due to a terrestrial gamma-ray flash."