GCN Circular 11472
Subject
GRB 101219A: Swift/UVOT Upper Limits
Event
Date
2010-12-19T13:49:14Z (15 years ago)
From
Paul Kuin at MSSL <npkuin@gmail.com>
N.P.M. Kuin (MSSL/UCL) and J.M. Gelbord (PSU)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 101219A
67 s after the BAT trigger (Gelbord et al., GCN Circ. 11461).
No optical afterglow consistent with the XRT position
is detected in the initial UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Poole et al. 2008, MNRAS, 383, 627) for the first finding chart (FC)
exposure and subsequent exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white_FC 67 217 147 >20.8
u_FC 279 528 246 >19.9
white 67 5557 467 >21.4
v 608 5968 432 >19.7
b 534 6724 369 >20.3
u 279 6582 658 >20.5
w1 658 6377 432 >21.0
m2 632 6172 432 >20.2
w2 584 5763 432 >20.9
The values quoted above are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.06 in the direction of the burst
(Schlegel et al. 1998).