GCN Circular 14991
Subject
GRB 130702A: Continued UVOT Observations
Date
2013-07-05T23:04:12Z (11 years ago)
From
Mike Siegel at PSU/Swift MOC <siegel@swift.psu.edu>
GRB 130702A: Continued UVOT Observations
B. Porterfield (PSU), M. Siegel (PSU) and P. D'Avanzo (INAF-OAB)
report on behalf of the Swift/UVOT team:
Swift reobserved the field of GRB 130702A on July 4 and July 5 2013.
We confirm the slow fading of the source first reported by Singer et al. (GCN Circ.
14973) and previously reported in UVOT by D'Avanzo et al. (GCN Circ. 14973).
We also note that we detect the transient in all four of UVOT's NUV filters,
which is consistent with the low redshift reported by Leloudas et al. (GCN Circ. 14983)
and D'Avanzo et al. (GCN Circ. 14984).
Preliminary detections using the UVOT photometric system (Breeveld et
al. 2011, AIP Conf. Proc. 1358, 373) are:
Filter T_start(s) T_stop(s) Exp(s) Mag
u 151366 153361 1962 18.48+-0.05
u 203252 205246 1962 18.97+/-0.07
u 250292 255654 272 19.51+/-0.26
uvw1 249967 255532 629 19.29+/-0.17
uvm2 251591 252014 415 19.67+/-0.28
uvw2 284670 285309 629 19.26+/-0.14
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.04 in the direction of the burst
(Schlegel et al. 1998).