GCN Circular 11332
Subject
GRB 101011A: Swift-BAT refined analysis
Date
2010-10-11T20:22:32Z (14 years ago)
From
Scott Barthelmy at NASA/GSFC <scott@lheamail.gsfc.nasa.gov>
C. B. Markwardt (GSFC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),
J. K. Cannizzo (NASA/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC),
H. A. Krimm (GSFC/USRA), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC),
M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (GWU)
(i.e. the Swift-BAT team):
Using the data set from T-240 to T+302 sec from recent telemetry downlinks,
we report further analysis of BAT GRB 101011A (trigger #436094)
(Cannizzo, et al., GCN Circ. 11331). The BAT ground-calculated position is
RA, Dec = 48.274, -65.990 deg, which is
RA(J2000) = 03h 13m 05.7s
Dec(J2000) = -65d 59' 23.2"
with an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 87%.
The mask-weighted light curve shows an initial FRED-like pulse starting
at ~T-0.3 sec, peaking at ~T+0.6 sec, then followed by several other weaker
peaks lasting out to ~T+90 sec. T90 (15-350 keV) is 71.5 +- 18.3 sec
(estimated error including systematics).
The time-averaged spectrum from T-0.4 to T+84.2 sec is best fit by a simple
power-law model. The power law index of the time-averaged spectrum is
1.24 +- 0.14. The fluence in the 15-150 keV band is 1.4 +- 0.1 x 10^-6 erg/cm2.
The 1-sec peak photon flux measured from T-0.22 sec in the 15-150 keV band
is 1.3 +- 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/436094/BA/