[vsnet-grb-info 14598] GRB 140302A: Swift/UVOT Upper Limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15912
SUBJECT: GRB 140302A: Swift/UVOT Upper Limits
DATE:    14/03/03 16:24:29 GMT
FROM:    Mike Siegel at PSU/Swift MOC  <siegel at swift.psu.edu>

M. H. Siegel (PSU) and C. Pagani (U Leicester)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 140302A
80 s after the BAT trigger (Pagani et al., GCN Circ. 15901).
No optical afterglow consistent with the optical position
(Elliott et al. GCN Circ. 15903)
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)          80          230          147         >20.5
white               80          593          167         >20.6
white            10575        11481          590         >21.1
v                  624          643           19         >18.3
v                16940        17847          590         >19.4
b                  549          569           19         >19.3
b                 9662        10569          590         >20.5
u (fc)             293          543          246         >19.7
uvw1               672          692           19         >19.0
uvm2             17853        17993          137         >18.9
uvw2             11487        12232          732         >20.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.52 in the direction of the burst
(Schlegel et al. 1998).