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GCN Circular 10486

GRB 100316A: Swift/UVOT Observations
2010-03-16T04:16:17Z (14 years ago)
Mike Siegel at PSU/Swift MOC <>
M. H. Siegel (PSU) and W. H. Baumgartner (GSFC/UMBC) report on behalf  
of the
Swift/UVOT team:

UVOT took a finding chart exposure of 150 seconds with the White filter
starting 3200 seconds after the BAT trigger. No credible afterglow  
has been found in the initial data products. The 2.7'x2.7' sub-image  
covers 100%
of the XRT error circle (Beardmore et al., GCN Circ. 10485). The  
typical 3-sigma
upper limit has been about 19.6 mag. The 8'x8' region for the list of  
generated on-board covers 100% of the XRT error circle. The list of  
sources is
typically complete to about 18 mag. No correction has been made for  
the expected
extinction corresponding to E(B-V) of 0.03.
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