[vsnet-grb-info 9814] GRB 100915A: Swift/UVOT Upper Limits
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Wed Sep 15 23:10:48 JST 2010
TITLE: GCN CIRCULAR
NUMBER: 11282
SUBJECT: GRB 100915A: Swift/UVOT Upper Limits
DATE: 10/09/15 14:10:44 GMT
FROM: Craig Swenson at PSU/Swift <cswenson at astro.psu.edu>
C. A. Swenson (PSU) and O. M. Littlejohns (U Leicester) report on behalf
of the Swift/UVOT team.
The Swift/UVOT began settled observations of the field of
GRB 100915A 123s after the BAT trigger (Littlejohns et al.,
GCN Circ. 11277). No new source is found at the enhanced
XRT position (Osborne et al., GCN Circ. 11279).
The 3-sigma uppder limits for the finding chart (fc) and
summed exposures are reported below:
FILTER T_start(s) T_stop Exposure Mag/3UL
===========================================================
white fc 140 290 147 >21.46
white 142 11637 1619 >22.83
v 123 13122 1057 >20.98
b 557 7343 467 >21.43
u fc 300 550 246 >20.68
u 300 7161 963 >21.52
uvw1 680 6956 491 >20.87
uvm2 1256 18902 2787 >21.79
uvw2 606 12544 1152 >21.50
The above magnitudes are not corrected for the Galactic extinction
corresponding to a reddening of E_{B-V} = 0.51 (Schlegel et al.,
1998, ApJS, 500, 525). The photometry is on the UVOT photometric
system described in Poole et al. (2008, MNRAS, 383, 627).
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