GCN Circular 14199

Subject

GRB 130211A: Swift/UVOT Upper Limits

Event

Date

2013-02-11T21:58:48Z (13 years ago)

From

Samantha Oates at MSSL <sro@mssl.ucl.ac.uk>

S. R. Oates (MSSL-UCL) reports on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 130211A
125 s after the BAT trigger (Oates et al., GCN Circ. 14195Loading...
 
 ).
No optical afterglow consistent with the optical position
(Knust et al. GCN Circ. 14196Loading...
 
 ) 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           125          275          147         >21.8
white              125        17061         1076         >22.9
v                 4470        22933         1646         >21.7
b                 3854        16303         1278         >22.4
u                  284        29091          650         >21.3
w1                4880        28760         1082         >21.8
m2                4674        27853         1175         >21.6
w2                4265        22020         1968         >22.2

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.53 in the direction of the burst
(Schlegel et al. 1998).