GCN Circular 5973
Subject
GRB061222A Swift/UVOT: Upper Limits
Date
2006-12-22T18:11:23Z (17 years ago)
From
Samantha Oates at MSSL <sro@mssl.ucl.ac.uk>
S.R Oates(UCL-MSSL), D. Grupe(PSU), S.B.Pandey(UCL-MSSL)
report on the behalf of the Swift UVOT team:
The Swift/UVOT began observing the field of GRB 061222A
92 seconds after the BAT trigger (Grupe et al., GCN Circ.5954).
No optical afterglow candidate is detected in the XRT error circle
within the first V and White exposures or in later coadded images.
The 3 sigma upper limits for each UVOT filter are given
below:
Filter Tstart Tend Exposure 3sigUL
-------------------------------------------------
V finding 215 615 393 19.6
White finding 111 209 97 20.0
V 745 24842 5310 20.4
B 693 24112 2713 20.8
U 669 1591 78 19.4
w1 645 1711 83 19.2
m2 621 1701 97 19.3
w2 721 1653 58 19.3
White 110 1629 322 20.6
-------------------------------------------------
The values quoted above are not corrected for the expected Galactic
extinction of E_{B-V} = 0.099 mag (Schlegel et al. 1998).