A. Parsons, S. Barthelmy, L. Barbier (GSFC), J. Cummings (GSFC/NRC),
E. Fenimore (LANL), R. Fink, N. Gehrels (GSFC), S. Holland (GSFC/USRA),
D. Hullinger (GSFC/UMD), K. Hurley (UCB), H. Krimm (GSFC/USRA),
C. Markwardt (GSFC/UMD), D. Palmer (LANL), S. Piranomonte (ASDC),
T. Sakamoto (GSFC/NRC), G. Sato (ISAS), A. Smale (NASA HQ), M. Suzuki
J. Tueller (GSFC)
on behalf of the Swift-BAT team:
At 20:59:42 UT, the Swift Burst Alert Telescope (BAT) triggered and
located on-board GRB 050315. The spacecraft automatically slewed
to the burst location, and UVOT began automated observations. XRT was
not in a mode suitable for immediate position determination.
Using the time interval of the trigger of the burst, the
location is RA,Dec 306.476,-42.591 (J2000) with an uncertainty of 3
(radius, including a systematic uncertainty, 90% containment).
The burst was 40 degrees off the BAT boresight (60% coding).
The burst lightcurve has 2 overlapping FRED-like peaks. The duration
is ~40 sec. There is no further emmission out to T+180 sec, where the
of the real-time TDRSS data ends. The peak count rate is ~2500