GCN Circular 14902

Subject

GRB 130615A: Swift/UVOT Upper Limits

Event

Date

2013-06-15T19:21:11Z (13 years ago)

From

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

S. R. Oates (MSSL-UCL) 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 130615A
180 s after the BAT trigger (Sonbas et al., GCN Circ. 14897Loading...
 
 ).
No optical afterglow consistent with the optical position
(Elliott et al. GCN Circ. 14898Loading...
 
 )
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

u_FC               180          430          246         >20.1
v                  463         7314          580         >20.1
u                  180        12850         1827         >21.3
w1                 512        11936         1434         >20.9
m2                 488         7445          672         >20.3
w2                 439        13208          933         >20.8

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.12 in the direction of the burst
(Schlegel et al. 1998).