GCN Circular 10310
Subject
GRB 100103A: Swift/UVOT Upper Limits
Date
2010-01-03T23:57:10Z (14 years ago)
From
Margaret Chester at PSU <chester@astro.psu.edu>
M. M. Chester (PSU), M. H. Siegel (PSU), S. Immler (NASA/CRESST/GSFC),
and W. H. Baumgartner (GSFC/UMBC) report on behalf of the Swift/UVOT
team:
The Swift/UVOT began observing the INTEGRAL-detected GRB 100103A
(D.Gotz, et al., GCN Circ. 10307) at 18:36UT on January 3rd, 2010,
approximately 54 mins after the INTEGRAL detection. No optical
afterglow consistent with the Swift/XRT candidate (J. Kennea, et al.,
GCN Circ. 10308) is detected in the UVOT exposures. Preliminary 3-
sigma upper limits using the UVOT photometric system (Poole et al.
2008, MNRAS, 383, 627) are:
Filter T_start(s) T_stop(s) Exp(s) Mag
----------------------------------------------------------------
v 3244 4409 1165 >20.44
u 4418 5554 1136 >20.70
The values quoted above are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.29 in the direction of the XRT
candidate (Schlegel et al. 1998).