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 5413

GRB 060805B: Swift/UVOT Upper Limits
2006-08-07T17:01:42Z (18 years ago)
Patricia Schady at MSSL/Swift <>
P. Schady  (UCL-MSSL) reports on behalf of the Swift/UVOT team:

The Swift/UVOT began observing the field of the GRB060805B on Aug. 7th at 
01:34:52 UT. No optical afterglow candidate has been found in the coadded 
images of any of the UV/optical lenticular filters within the IPN error 
box reported by Hurley et al. (GCN 5407).

The 3-sigma limiting magnitudes for the coadded images for the
6 filters are listed below:

Filter       Tstart (UT)      Exposure(s)     3sig upper limits
V            02:02:23         1397             20.56
B            01:45:13         1397             21.61
U            01:41:44         1397             21.26
UVW1         01:34:52         2802             20.77
UVM2         02:05:50         3619             21.27
UVW2         01:48:42         2402             21.27

These upper limits have not been corrected for the estimated Galactic reddening 
of E(B-V) = 0.037 mag (Schlegel et al. 1998).
Looking for U.S. government information and services? Visit