GCN Circular 14738
Subject
Swift/UVOT observations of GRB130603A
Date
2013-06-03T19:36:24Z (11 years ago)
From
Massimiliano de Pasquale at MSSL-UCL <m.depasquale@ucl.ac.uk>
M. De Pasquale (MSSL/UCL) and A. Melandri (INAF/OAB) report on behalf
of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 130603A
3325 s after the BAT trigger (Melandri et al., GCN Circ. 14731). The
uncatalogued source reported in Melandri et al., GCN Circ. 14732, is
detected in the summed exposures.
Preliminary detections and 3-sigma upper limits using the UVOT
photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for
the summed exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white 3686 5322 393 19.61 � 0.15
v 4097 5562 197 >19.02
b 3481 16641 1278 19.71 � 0.15
u 3275 15729 1278 19.19 � 0.13
uvw1 4507 4707 197 19.62 � 0.39 (2.8 sigma)
uvm2 4302 4502 197 >19.63
uvw2 3892 5528 393 20.25 � 0.37 (2.8 sigma)
The possible detection of the optical source in uw2 filter indicates
a redshift z < ~1.5 for this event.
The magnitudes in the table are not corrected for the Galactic
extinction due to the reddening of E(B-V) = 0.06 in the direction of
the burst (Schlegel et al. 1998).