[vsnet-grb-info 15312] GRB 140716A: Swift/UVOT Upper Limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16604
SUBJECT: GRB 140716A: Swift/UVOT Upper Limits
DATE:    14/07/17 20:23:33 GMT
FROM:    Lea Hagen at PSU  <lea.zernow.hagen at gmail.com>

L. M. Z. Hagen (PSU) 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 140716A
34072 s after the BAT trigger (Cummings, GCN Circ. 16596). No optical
afterglow consistent with the XRT candidate (Page, GCN Circ. 16600) or
GROND candidate (Knust et al., GCN Circ. 16601) 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 initial exposures are:

Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

u (fc)           34072        34367          291        >19.17
u                40452        56904         1860        >20.20
v                40559        57641         1125        >19.52

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.131 in the direction of the burst
(Schlegel et al. 1998).