GCN Circular 6633
Subject
GRB 070714A: Swift/UVOT Upper limits
Date
2007-07-16T20:38:18Z (17 years ago)
From
Margaret Chester at PSU <chester@astro.psu.edu>
M.M. Chester (PSU) and D. Grupe (PSU) report on the behalf of the
Swift UVOT team:
The Swift/UVOT observed the field of GRB070714A (trigger=284850)
starting 2007-195-03:21:15, 44 s after the BAT trigger (Grupe et al.
2007, GCN Circ. 6619). We do not find any new source in any of the UVOT
observations inside the refined XRT error circle (Grupe 2007, GCN Circ.
6628).
The 3-sigma upper limits for detecting a source inside the XRT error
circle in the first finding chart (FC) exposure and the co-added frames
(including the finding chart) are:
Filter Tstart Tstop Exp Magnitude
(s) (s) (s) (3-sigma UL)
White FC 61 161 98.2 20.19
White 61 1641 235 20.63
v 44 1690 855 19.69
b 647 5955 138 19.55
u 622 5868 274 19.71
uvw1 598 5664 274 19.03
uvm2 5258 5458 197 18.96
uvw2 677 1666 77.8 18.49
The values quoted above are not corrected for the expected Galactic
extinction corresponding to a reddening of E_{B-V} = 0.186 mag in the
direction of the burst (Schlegel et al. 1998).