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GCN Circular 15421

GRB 131031A found in ground analysis of BAT data
2013-10-31T21:10:02Z (10 years ago)
Jay R. Cummings at NASA/GSFC/Swift <>
J. R. Cummings reports on behalf of the Swift science team:

At 11:33:31 UT, Swift-BAT rate-triggered on GRB 131031A (trigger 576277).  No
significant source was found onboard.  In ground analysis, a significant source
was found at the very edge of the BAT field of view (3% coded).  The location is
RA, Dec 29.618, -1.603, which is:

RA (J2000)    01h 58m 28.3s
Dec (J2000)  -01d 36' 11"

with an estimated error radius of 4 arcmin (90% containment).  This GRB also
triggered Fermi GBM.

The burst was about 8 seconds long, with a multipeaked structure.

A Swift TOO request has been submitted to locate the afterglow with XRT and UVOT.
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