GCN Circular 5603
Subject
GRB060923B: Swift/UVOT upper limits
Event
Date
2006-09-24T18:05:41Z (20 years ago)
From
Antonino Cucchiara at PSU <cucchiara@astro.psu.edu>
S. Holland and A. Cucchiara report on behalf of the
Swift/UVOT team:
The Swift UVOT began observing GRB 060923B (trigger #230702),
M. Stamatikos et al., GCN Circ. 5590) 122 seconds after the
BAT trigger. No optical afterglow is detected in the XRT
refined error circle (M. Capalbi et al., GCN Circ.5602).
The 3-sigma limiting magnitudes for the finding chart and the
coadded images for the UVOT filters are listed below:
Finding chart:
Filter T_range (s) Exposure (s) 3sigma UL
White 122-220 98 19.42
White 5163-5360 197 19.79
V 225-387 162 18.52
Coadded images:
Filter T_range (s) Exposure (s) 3sigma UL
V 5572-5768 196 18.61
B 4959-5156 197 19.61
U 4754-4950 197 19.28
W1 4550-6170 386 19.45
M2 4345-5974 394 19.70
W2 5368-5565 197 19.92
T_range is calculated from the time of the burst. No correction has
been made for the Galactic reddening of E(B-V) = 0.15 mag
(Schlegel et al. 1998) along the line of sight to the burst.