GCN Circular 11560
Subject
GRB 110112A: Swift/UVOT upper limits
Date
2011-01-12T22:53:06Z (13 years ago)
From
Alice Breeveld at MSSL-UCL <aab@mssl.ucl.ac.uk>
A. A. Breeveld (MSSL/UCL) and M. Stamatikos (OSU/NASA/GSFC) report on
behalf
of the Swift/UVOT team:
Swift UVOT started observing the field of GRB 110112A with the white
filter 85s after the trigger (Stamatikos et al., GCN Circ. 11553).
No optical afterglow consistent with the TNT or XRT positions (Xin et
al., CGN Circ. 11554 and Evans et al., GCN Circ. 11556) is detected in
individual or merged UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Poole et al. 2008, MNRAS, 383, 627) are:
Filter T_start T_stop Exp(s) Mag (Upper limits)
---------------------------------------------------------------------------
white 85 235 147 >20.4
white 4499 6134 393 >21.3
v 4909 6544 393 >19.6
b 4294 5929 393 >20.3
u 287 5724 639 >20.2
uvw1 5319 5519 19.7 >18.8
uvm2 5079 6634 280 >18.9
uvw2 4705 6339 393 >19.2
----------------------------------------------------------------------------
The quoted upper limits have not been corrected for the expected
Galactic extinction along the line of sight corresponding to a
reddening of E_{B-V} = 0.06 mag (Schlegel et al., 1998, ApJS, 500, 525).