GCN Circular 11936
Subject
GRB 110414A: Swift/UVOT Upper limits
Event
Date
2011-04-14T23:01:09Z (15 years ago)
From
Tyler Pritchard at PSU <tapritchard@astro.psu.edu>
T.A. Pritchard (PSU) and R. L. C. Starling (U Leicester)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 110414A
151 s after the BAT trigger (Starling et al., GCN Circ. 11931).
No optical afterglow consistent with the XRT position
(Starling et al., GCN Circ. 11931) 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 initial exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white_FC 150 300 147 >20.6
u_FC 308 558 246 >19.4
white 150 1013 334 >21.3
v 639 831 39 >18.4
b 565 758 39 >18.9
u 308 733 265 >19.5
w1 689 709 19 >18.5
m2 664 856 39 >18.8
w2 615 807 39 >19.2
The values quoted above are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.33 in the direction of the burst
(Schlegel et al. 1998).