[vsnet-grb-info 17476] GRB 160119A: Swift/UVOT Upper Limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  18904
SUBJECT: GRB 160119A: Swift/UVOT Upper Limits
DATE:    16/01/20 13:46:13 GMT
FROM:    Marissa McCaule at PSU  <marissamc at swift.psu.edu>

L. M. McCauley (PSU) and F. E. Marshall (NASA/GSFC)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 160119A
169 s after the BAT trigger (Marshall et al., GCN Circ. 18893).
No optical afterglow consistent with the optical position
(Malesani et al. GCN Circ. 18895)
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              169        319          147      >21.04
white                 607       7398          478      >21.06
v                     657      34548         4935      >20.99
b                     755       7355          471      >20.19
u                     327       7150          716      >20.26
uvw1                 1460      30371         3157      >21.07
uvm2                 6540      29669         3739      >21.45
uvw2                 6130       6330          196      >19.89

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.04 in the direction of the burst
(Schlegel et al. 1998).