[vsnet-grb-info 18601] GRB 161014A: Swift-BAT refined analysis

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  20049
SUBJECT: GRB 161014A: Swift-BAT refined analysis
DATE:    16/10/15 14:04:09 GMT
FROM:    Takanori Sakamoto at AGU  <tsakamoto at phys.aoyama.ac.jp>

S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC),
H. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC),
D. M. Palmer (LANL), J. L. Racusin (NASA/GSFC), T. Sakamoto (AGU),
M. Stamatikos (OSU), T. N. Ukwatta (LANL)
(i.e. the Swift-BAT team):

Using the data set from T-240 to T+962 sec from the recent telemetry downlink,
we report further analysis of BAT GRB 161014A (trigger #717500)
(Racusin, et al., GCN Circ. 20035).  The BAT ground-calculated position is
RA, Dec = 332.626, 7.467 deg which is
    RA(J2000)  =  22h 10m 30.1s
    Dec(J2000) = +07d 28' 01.9"
with an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 13%.

The mask-weighted light curve shows a complex structure starting at T-10 sec
and ending at T+15 sec.  T90 (15-350 keV) is 18.3 +- 2.8 sec (estimated error
including systematics).

The time-averaged spectrum from T-9.1 to T+12.5 sec is best fit by a simple
power-law model.  The power law index of the time-averaged spectrum is
1.47 +- 0.15.  The fluence in the 15-150 keV band is 1.9 +- 0.2 x 10^-6 erg/cm2.
The 1-sec peak photon flux measured from T+0.10 sec in the 15-150 keV band
is 2.9 +- 0.6 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/717500/BA/