GCN Circular 16613
Subject
GRB 140719A, Swift-BAT refined analysis
Date
2014-07-20T13:02:06Z (10 years ago)
From
Takanori Sakamoto at AGU <tsakamoto@phys.aoyama.ac.jp>
T. N. Ukwatta (MSU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),
J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC),
H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC),
D. M. Palmer (LANL), T. Sakamoto (AGU), G. Sato (ISAS), M. Stamatikos (OSU),
R. L. C. Starling (U Leicester), J. Tueller (GSFC),
(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 140719A (trigger #605612)
(Starling, et al., GCN Circ. 16606). The BAT ground-calculated position is
RA, Dec = 171.571, -50.115 deg which is
RA(J2000) = 11h 26m 17.1s
Dec(J2000) = -50d 06' 55.1"
with an uncertainty of 2.4 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 75%.
The mask-weighted light curve shows a single peak starting at ~T-5 s sec,
peaking at ~T+0 sec, and ending at T+20 sec. T90 (15-350 keV) is 48 +- 23 sec
(estimated error including systematics).
The time-averaged spectrum from T-31.5 to T+16.5 sec is best fit by a simple
power-law model. The power law index of the time-averaged spectrum is
1.9 +- 0.3. The fluence in the 15-150 keV band is 4.3 +- 0.8 x 10^-7 erg/cm2.
The 1-sec peak photon flux measured from T+8.01 sec in the 15-150 keV band
is 0.2 +- 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/605612/BA/