GCN Circular 10421
Subject
GRB 100213B: Swift/UVOT Upper Limits
Date
2010-02-14T12:39:59Z (14 years ago)
From
Peter Curran at MSSL <pac@mssl.ucl.ac.uk>
P.A. Curran (MSSL-UCL) and L. Vetere (PSU) report on behalf of the
Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 100213B
158 s after the BAT trigger (Vetere et al., GCN 10412). No optical
afterglow consistent with the XRT position (Vetere et al., GCN 10416) or
the NOT R-band position (Malesani et al., GCN 10413) is detected in the
initial UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Poole et al. 2008, MNRAS, 383, 627) for the initial exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
--------------------------------------------------
white 158 4654 273 >21.17
v 3430 5065 393 >19.64
b 4250 5722 233 >20.38
u 4044 5679 393 >20.38
w1 3840 5475 393 >20.31
m2 3634 5269 393 >21.10
w2 4660 4860 197 >20.00
The values quoted above are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.08 in the direction of the burst
(Schlegel et al. 1998).