[vsnet-grb-info 15604] GRB 141005A: Swift-BAT refined analysis

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16893
SUBJECT: GRB 141005A: Swift-BAT refined analysis
DATE:    14/10/05 17:19:05 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), N. Gehrels (GSFC),
A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL),
T. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (LANL)
(i.e. the Swift-BAT team):
 
Using the data set from T-239 to T+963 sec from the recent telemetry downlink,
we report further analysis of BAT GRB 141005A (trigger #614415)
(D'Elia, et al., GCN Circ. 16882).  The BAT ground-calculated position is
RA, Dec = 291.103, 36.098 deg, which is 
   RA(J2000)  =  19h 24m 24.7s 
   Dec(J2000) = +36d 05' 54.1" 
with an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 6%.
 
The mask-weighted light curve shows a single peak starting at ~T-1 sec,
peaking at ~T+2 sec, and ending at ~T+7 sec.  T90 (15-350 keV) is 4.34 +- 1.08 sec
(estimated error including systematics).
 
The time-averaged spectrum from T+0.19 to T+5.66 sec is best fit by a simple
power-law model.  The power law index of the time-averaged spectrum is
1.33 +- 0.18.  The fluence in the 15-150 keV band is 1.1 +- 0.1 x 10^-6 erg/cm2.
The 1-sec peak photon flux measured from T+0.68 sec in the 15-150 keV band
is 4.2 +- 0.8 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/614415/BA/