GCN Circular 11545
Subject
GRB 110107A detected in ground analysis of BAT slew data
Date
2011-01-08T11:50:43Z (14 years ago)
From
Jay R. Cummings at NASA/GSFC/Swift <james.r.cummings@nasa.gov>
J. R. Cummings (GSFC/UMBC) on behalf of the Swift-BAT team
GRB 110107A occurred at 21:15:51 UTC. It was observed by Fermi GBM (trigger
316127753) and occurred during a Swift slew with BAT event capture. There is a
strong source in a mosaic of BAT images at RA, Dec 299.890, 41.889, which is
RA (J2000) 19h 59m 33.6s
Dec (J2000) +41d 53m 19s
with an estimated 90% uncertainty of 3 arcmin radius.
The burst was about 100 seconds long, starting at about T-70 sec and lasting
until about T+40 sec. The BAT event data ended at about T+21 sec. The burst
had multiple peaks, with the largest flux at about T0, the time of the Fermi
GBM trigger. The peak count rate in BAT was about 4000 counts/sec.
A Swift Target of Opportunity observation has been requested and approved.