GCN Circular 17127
Subject
GRB 141130A: Swift-BAT refined analysis
Date
2014-12-01T13:29:51Z (9 years ago)
From
Scott Barthelmy at NASA/GSFC <scott@lheamail.gsfc.nasa.gov>
A. Y. Lien (GSFC/UMBC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),
J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA),
C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU),
M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (LANL), A. Vargas (PSU)
(i.e. the Swift-BAT team):
Using the data set from T-240 to T+962 sec from recent telemetry downlinks,
we report further analysis of BAT GRB 141130A (trigger #620090)
(Vargas, et al., GCN Circ. 17120). The BAT ground-calculated position is
RA, Dec = 222.804, 47.323 deg which is
RA(J2000) = 14h 51m 13.0s
Dec(J2000) = +47d 19' 24.3"
with an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 73%.
The mask-weighted light curve shows the burst starting at ~T-43 sec, going
flat until ~T-10 sec, then peaking at ~T-2 sec, and then returing
to baseline ~T+60 sec. T90 (15-350 keV) is 62.9 +- 11.4 sec
(estimated error including systematics).
The time-averaged spectrum from T-42.75 to T+40.02 sec is best fit by a simple
power-law model. The power law index of the time-averaged spectrum is
1.56 +- 0.08. The fluence in the 15-150 keV band is 2.8 +- 0.1 x 10^-6 erg/cm2.
The 1-sec peak photon flux measured from T-4.69 sec in the 15-150 keV band
is 1.2 +- 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/620090/BA/