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 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).