Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 19494

GRB 160601A: Swift-BAT refined analysis
2016-06-02T17:50:25Z (8 years ago)
Tilan Ukwatta at LANL <>
J. R. Cummings (GSFC/UMBC), S. D. Barthelmy (GSFC),
N. Gehrels (GSFC), D. Kocevski (NASA/GSFC/ORAU),
H. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC),
C. B. Markwardt (GSFC), D. M. Palmer (LANL),
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+500 sec from the recent
telemetry downlink, we report further analysis of BAT
GRB 160601A (trigger #688452) (Kocevski, et al., GCN Circ.
19478).  The BAT ground-calculated position is
RA, Dec = 234.923, 64.532 deg which is
   RA(J2000)  =  15h 39m 41.6s
   Dec(J2000) = +64d 31' 53.5"
with an uncertainty of 1.9 arcmin, (radius, sys+stat,
90% containment). The partial coding was 66%.

The mask-weighted light curve shows a single pluse
starting ~T-0.1 sec, and ending around ~T+0.15 sec.
T90 (15-350 keV) is 0.12 +- 0.02 sec (estimated error
including systematics).

The time-averaged spectrum from T-0.02 to T+0.12 sec is
best fit by a simple power-law model.  The power law
index of the time-averaged spectrum is 1.04 +- 0.24.
The fluence in the 15-150 keV band is 6.6 +- 1.1 x 10^-08
erg/cm2. The 1-sec peak photon flux measured from T-0.45
sec in the 15-150 keV band is 0.9 +- 0.2 ph/cm2/sec. All
the quoted errors are at the 90% confidence level.

The results of the batgrbproduct analysis are available at
Looking for U.S. government information and services? Visit