[vsnet-grb-info 6306] GRB 080702A, Swift-BAT refined analysis

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  7926
SUBJECT: GRB 080702A, Swift-BAT refined analysis
DATE:    08/07/02 21:52:54 GMT
FROM:    Scott Barthelmy at NASA/GSFC  <scott at lheamail.gsfc.nasa.gov>

H. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. Baumgartner (GSFC/UMBC),
J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC),
C. Markwardt (GSFC/UMD), K. McLean (GSFC/UMD), D. Palmer (LANL),
M. De Pasquale (UCL-MSSL), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS),
M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU)
(i.e. the Swift-BAT team):
 
Using the data set from T-120 to T+182 sec from recent telemetry downlinks,
we report further analysis of BAT GRB 080702A (trigger #315710)
(De Pasquale, et al., GCN Circ. 7920).  The BAT ground-calculated position is
RA, Dec = 313.049, 72.278 deg, which is 
   RA(J2000)  =  20h 52m 11.8s 
   Dec(J2000) = +72d 16' 39.7" 
with an uncertainty of 3.0 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 81%.
 
The mask-weighted light curve shows a weak single spike.
T90 (15-350 keV) is 0.5 +- 0.2 sec (estimated error including systematics).
 
The time-averaged spectrum from T-0.0 to T+0.5 sec is best fit by a simple
power-law model.  The power law index of the time-averaged spectrum is
1.34 +- 0.42.  The fluence in the 15-150 keV band is 3.6 +- 1.0 x 10^-8 erg/cm2.
The 1-sec peak photon flux measured from T-0.22 sec in the 15-150 keV band
is 0.7 +- 0.2 ph/cm2/sec.  All the quoted errors are at the 90% confidence
level. 
 
The results of the batgrbproduct analysis are available at
http://gcn.gsfc.nasa.gov/notices_s/315710/BA/