[vsnet-grb-info 11908] GRB 120514A: Swift/UVOT Upper Limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  13297
SUBJECT: GRB 120514A: Swift/UVOT Upper Limits
DATE:    12/05/14 16:42:24 GMT
FROM:    Erik Hoversten at Swift/Penn State  <hoversten at astro.psu.edu>

E. A. Hoversten (PSU) and V. Mangano (INAF-IASFPA)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 120514A
110 s after the BAT trigger (Mangano et al., GCN Circ. 13289).
No optical afterglow consistent with the enhanced XRT position
(Evans et al., GCN Circ. 13292) is detected in the initial UVOT  
exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first
finding chart (FC) exposure and subsequent exposures are:

Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white_FC           110          260          147         >20.6
u_FC               324          574          246         >20.5
white              110         1029          295         >20.9
u                  324          574          246         >20.5

The magnitudes in the table are not corrected for the Galactic  
extinction
due to the reddening of E(B-V) = 1.63 in the direction of the burst
(Schlegel et al. 1998).