[vsnet-grb-info 15105] GRB 140614A: Swift/UVOT Upper Limits

GCN Circulars gcncirc at capella2.gsfc.nasa.gov
Sat Jun 14 23:11:51 JST 2014


TITLE:   GCN CIRCULAR
NUMBER:  16397
SUBJECT: GRB 140614A: Swift/UVOT Upper Limits
DATE:    14/06/14 14:11:43 GMT
FROM:    Paul Kuin at MSSL  <npkuin at gmail.com>

N. P. M. Kuin (UCL-MSSL) and K. L. Page (U Leicester)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 140614A
132 s after the BAT trigger (Page et al., GCN Circ. 16391).
No optical afterglow consistent with the XRT position
(Beardmore et al. GCN Circ. 16393)
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           132          281          147         >21.5
u_FC               290          539          246         >20.5
white              132          763          186         >21.6
v                  620         1668           39         >19.1
b                  546          739           39         >19.6
u                  290          714          265         >20.5
w1                 670         1718           39         >19.1
m2                 645         1693           39         >18.9
w2                 596          783           34         >20.4

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).


More information about the vsnet-grb-info mailing list