GCN Circular 15768
Subject
GRB 140129A: Swift/UVOT Observations
Date
2014-01-29T16:52:45Z (10 years ago)
From
Craig Swenson at PSU/Swift <cswenson@astro.psu.edu>
C. A. Swenson (PSU) and A. Melandri (INAF-OAB)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140129A
117 s after the BAT trigger (Melandri et al., GCN Circ. 15760).
A source consistent with the XRT position (Evans et al. GCN Circ. 15764)
is detected in the initial UVOT exposures.
The preliminary UVOT position is:
RA (J2000) = 02:31:33.78 = 37.89076 (deg.)
Dec (J2000) = -01:35:43.4 = -1.59539 (deg.)
with an estimated uncertainty of 0.50 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 early
exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white 117 267 147 16.51 � 0.03
v 605 1250 78 18.69 � 0.24
b 531 551 20 17.76 � 0.14
u 275 525 246 16.98 � 0.04
w1 654 17641 1357 20.77 � 0.22
m2 5292 13449 1054 >21.2
w2 753 11858 1102 >22.0
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.03 in the direction of the burst
(Schlegel et al. 1998).