GCN Circular 4102
Subject
GRB 051016: Swift-BAT refined analysis
Date
2005-10-16T17:34:48Z (19 years ago)
From
Scott Barthelmy at NASA/GSFC <Scott@lheamail.gsfc.nasa.gov>
J. Tueller (GSFC), L. Barbier (GSFC), S. Barthelmy (GSFC),
J. Cannizzo (GSFC-UMBC), J. Cummings (GSFC/NRC), E. Fenimore (LANL),
N. Gehrels (GSFC), D. Hullinger (UMD), H. Krimm (GSFC/USRA),
C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC),
T. Sakamoto (GSFC/NRC), G. Sato (ISAS),
M. Tashiro (Saitama U.),
on behalf of the Swift-BAT team:
Using the data set from T-300 to T+300 sec from recent telemetry
downlinks, we report further analysis of Swift-BAT GRB 051016 (trigger 159913)
(Boyd, et al., GCN 4096). The refined BAT ground position is
(RA,Dec) = 122.820, -18.309 deg {8h 11m 16.9s, -18d 18' 33.2"} (J2000)
+- 2.0 arcmin, (radius, sys+stat, 90% containment). This position is
38 arcsec from the refined XRT position (Beardmore t al., GCN 4100).
The partial coding was 18 %.
The light curve shows a FRED-like peak. T90 (15-350 keV) is (22 +- 1) sec
(estimated error including systematics).
The power law index of the time-averaged spectrum is 1.88 +- 0.27.
The fluence in the 15-150 keV band is (8.8 +- 1.4) x 10^-7 erg/cm2.
The 1-sec peak photon flux measured from T0+0.3 sec in the 15-150 keV
band is (1.6 +- 0.4) ph/cm2/sec. All the quoted errors are at the 90%
confidence level.