[vsnet-grb-info 2358] GRB 051105: Swift-BAT improved refined analysis

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4194
SUBJECT: GRB 051105: Swift-BAT improved refined analysis
DATE:    05/11/05 16:22:19 GMT
FROM:    Louis M Barbier at NASA/GSFC/Swift  <lmb at cosmicra.gsfc.nasa.gov>

L. Barbier (GSFC), S. Barthelmy (GSFC), 
J. Cummings (GSFC/NRC), E. Fenimore (LANL), N. Gehrels (GSFC), 
D. Hullinger (UMD), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD),
T. Mitani (ISAS), 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:

We have re-analyzed GRB 051105 (GCN Circ 4188, Mineo et al., and 
GCN Circ 4190, Cummings et al.) based on new time interval T0
to T0 + 0.120 sec.

The improved refined BAT ground position is (RA,Dec) = 265.277, 34.949, 
{17h 41m  6.6s, 34d 56' 56.8"} [deg; J2000] +- 2.5 arcmin, 
(90% containment). The partial coding was 81%.  

The photon index of the time-averaged spectrum is 1.33 +- 0.35 
in the time interval TO + 0.122 sec. The fluence in the 15-150 keV 
band is (2.0 +- 0.46) x 10^-8 erg/cm2. The peak photon flux in the 
same time window measured in the 15-150 band is (2.0 +- 0.43) 
ph/cm2/sec.  All the quoted errors are at the 90% confidence level.