GCN Circular 14149
Subject
GRB 130122A: Swift/UVOT Detection
Date
2013-01-24T12:16:16Z (11 years ago)
From
Patricia Schady at MPE/Swift <msslba@googlemail.com>
A. A. Breeveld (MSSL-UCL) and A. Y. Lien (NASA/GSFC/ORAU) report on behalf
of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 130122A 121 s
after the BAT trigger (Lien et al., GCN Circ. 14140). A source consistent
with the XRT position reported in (Beardmore et al., GCN Circ. 14143) is
seen in the initial exposures.
The preliminary UVOT position is:
RA (J2000) = 12:57:08.30 = 194.28459 (deg.)
Dec (J2000) = +59:00:53.5 = 59.01487 (deg.)
with an estimated uncertainty of 0.53 arc sec. (radius, 90% confidence).
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) and earliest exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white_FC 121 271 148 18.75 �� 0.09
white 559 579 19 18.57 �� 0.23
v 609 629 19 >17.9
b 535 555 19 18.35 �� 0.32
u 279 529 246 18.49 �� 0.14
uvw1 3974 5610 393 >20.9
uvm2 5205 5404 197 >20.0
uvw2 4795 4995 197 >20.4
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.01 in the direction of the burst
(Schlegel et al. 1998).