GCN Circular 16263
Subject
GRB 140512A: Continued UVOT Observations
Event
Date
2014-05-13T20:08:32Z (12 years ago)
From
Mike Siegel at PSU/Swift MOC <siegel@swift.psu.edu>
B. Porterfield (PSU) and C. Pagani (U Leicester)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140512A
106 s after the BAT trigger (Pagani et al., GCN Circ. 16249).
We can confirm the detection of a fading source with the
UVOT position
RA(J2000) = 19:17:28.78 = 289.36991
DEC(J2000) = -15:05:39.2 = -15.09423
Preliminary detections and 3-sigma upper limits using the UVOT photometric
system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the
finding chart (FC) exposures and subsequent exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white (fc) 106 256 293 14.91 +/- 0.07
white 106 1022 186 16.99 +/- 0.07
white 1175 6197 412 19.07 +/- 0.08
v 88 1072 68 15.97 +/- 0.09
v 4973 6608 393 18.68 +/- 0.15
b 574 1344 76 16.84 +/- 0.08
b 5793 5992 196 19.56 +/- 0.19
u (fc) 319 568 491 15.37 +/- 0.07
u 5587 7102 275 19.08 +/- 0.18
uvw1 697 1295 58 17.52 +/- 0.19
uvw1 5383 7018 393 20.10 +/- 0.34
uvm2 672 1270 77 >18.71
uvm2 5177 6812 393 >20.17
uvw2 624 1220 77 >19.05
uvw2 4769 6403 393 >20.47
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.162 in the direction of the burst
(Schlegel et al. 1998).