[vsnet-grb-info 13304] GRB 130514A: Swift/UVOT Upper Limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14640
SUBJECT: GRB 130514A: Swift/UVOT Upper Limits
DATE:    13/05/14 17:28:08 GMT
FROM:    Frank Marshall at GSFC  <femarsha at khamseen.gsfc.nasa.gov>

F. E. Marshall (NASA/GSFC) and E. Sonbas (NASA/GSFC/Adiyaman Univ.)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 130514A
97 s after the BAT trigger (Sonbas et al., GCN Circ. 14632).
No optical afterglow consistent with the optical position
from GROND (Schmidl et al. GCN Circ. 14634)
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            97          247          147         >21.3
u_FC               310          560          246         >20.4
white               97          960          281         >21.5
v                  639         2529           56         >18.7
b                  565          757           39         >19.1
u                  310          732          265         >20.5
w1                 688          708           19         >19.1
w2                2487         2507           19         >19.5

The magnitudes in the table are not corrected for the 
Galactic extinction due to the reddening of E(B-V) = 0.23 
in the direction of the burst (Schlegel et al. 1998).