GCN Circular 16672
Subject
GRB 140808A: Swift/UVOT Upper Limits
Event
Date
2014-08-09T10:06:12Z (11 years ago)
From
Samantha Oates at MSSL <sro@mssl.ucl.ac.uk>
S. R. Oates (IAA-CSIC/UCL-MSSL) and S. B. Cenko (GSFC)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140808A
42 ks after the GBM trigger (Zhang et al., GCN Circ. 16669).
No optical afterglow consistent with the candidate optical position
(iPTF14eag; Singer et al. GCN Circ. 16668) is detected in the initial UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the initial exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white 41951 47112 835 >22.3
v 42055 47902 857 >20.7
u 41848 51959 1212 >21.2
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.02 in the direction of the burst
(Schlegel et al. 1998).