GCN Circular 3279
Subject
Swift-BAT detection of GRB 050416b
Date
2005-04-16T23:23:57Z (20 years ago)
From
Scott Barthelmy at NASA/GSFC <Scott@lheamail.gsfc.nasa.gov>
D. Hullinger (UMD), L. Barbier, S. Barthelmy (GSFC), J. Cummings (GSFC/NRC),
E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA),
C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC),
T. Sakamoto (GSFC/NRC), G. Sato (ISAS), M. Suzuki (Saitama),
J. Tueller (GSFC)
on behalf of the Swift-BAT team:
At 22:35:54.11 UT Swift-BAT triggered on burst GRB 050416b (trigger=114797).
The BAT flight position is RA,Dec=133.853,+11.173 (J2000). We note this
is 17 deg from the Moon, hence the s/c did not slew because of the Moon
observing constraint. The burst was 53 deg off the BAT bore sight.
The lightcurve shows a narrow peak with a total burst duration of ~5 sec
(T90=~3sec in 15-350 keV).