[vsnet-grb-info 13392] GRB 130529A: Swift-BAT refined analysis

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14726
SUBJECT: GRB 130529A: Swift-BAT refined analysis
DATE:    13/05/30 11:00:33 GMT
FROM:    Scott Barthelmy at NASA/GSFC  <scott at lheamail.gsfc.nasa.gov>

H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),
J. R. Cummings (GSFC/UMBC), V. D'Elia (ASDC), E. E. Fenimore (LANL),
N. Gehrels (GSFC), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC),
D. M. Palmer (LANL), T. Sakamoto (AGU), G. Sato (ISAS),
M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU)
(i.e. the Swift-BAT team):
 
Using the data set from T-239 to T+464 sec from recent telemetry downlinks,
we report further analysis of BAT GRB 130529A (trigger #556930)
(D'Elia, et al., GCN Circ. 14717).  The BAT ground-calculated position is
RA, Dec = 24.274, -64.143 deg, which is 
   RA(J2000)  =  01h 37m 05.7s 
   Dec(J2000) = -64d 08' 34.8" 
with an uncertainty of 1.9 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 100%.
 
The mask-weighted light curve shows the burst starting at ~T-20 sec,
peaking at about T+80 sec, and ending at ~T+260 sec.
T90 (15-350 keV) is 128 +- 35 sec (estimated error including systematics).
 
The time-averaged spectrum from T-15.02 to T+150.62 sec is best fit by a simple
power-law model.  The power law index of the time-averaged spectrum is
1.56 +- 0.17.  The fluence in the 15-150 keV band is 1.4 +- 0.2 x 10^-06 erg/cm2.
The 1-sec peak photon flux measured from T+64.28 sec in the 15-150 keV band
is 0.5 +- 0.1 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/556930/BA/