[vsnet-grb-info 3766] GRB 060923C, Swift-BAT partial refined analysis

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5600
SUBJECT: GRB 060923C, Swift-BAT partial refined analysis
DATE:    06/09/23 22:42:57 GMT
FROM:    Scott Barthelmy at NASA/GSFC  <scott at lheamail.gsfc.nasa.gov>

S. D. Barthelmy (GSFC), L. Barbier (GSFC), J. Cummings (GSFC/UMBC),
E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (BYU-Idaho),
H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL),
A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU), G. Sato (GSFC/ISAS),
M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC)
on behalf of the Swift-BAT team:
 
Using a partial data set from T-119 to T+183 sec from recent telemetry downlinks,
we report further analysis of BAT GRB 060923C (trigger #230711)
(Stamatikos, et al., GCN Circ. 5591).  The BAT ground-calculated position
is RA,Dec = 346.123, 3.963 deg {23h 4m 29.4s, 3d 57' 47.4"} (J2000)
+- 2.2 arcmin, (radius, sys+stat, 90% containment).  The partial coding was 17%.
 
With only a partial data set downlinked (there is a gap in the data
between T+51 to +62 sec), the mask-weighted lightcurve has a single long
emision from T+0 to T+110 sec.
 
The lower limit to the fluence in the 15-150 keV band is
1.3 +- 0.2 x 10^-6 erg/cm2.  We repeat that there is an 11-sec gap
in the data in the middle of this burst used for this analysis.

When the full data set is downlinked, we will report the usual numbers.