{
  "bibcode": "2015GCN.18597....1O",
  "body": "S. R. Oates (IAA-CSIC/UCL-MSSL) and D. Malesani (DARK/NBI)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 151112A\n3144 s after the BAT trigger (Malesani et al., GCN Circ. 18588).\nNo optical afterglow, consistent with the enhanced XRT position\n(Osborne et al. GCN Circ. 18592) and the GROND position \n(Knust et al., GCN Circ. 18595), is detected in the initial UVOT exposures.\nPreliminary 3-sigma upper limits using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first\nfinding chart (FC) exposure and subsequent exposures are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)         Mag\n\nwhite_FC          3144         3294          147         >21.3\nwhite             3144         4527          344         >21.8\nv                 3301         4938          393         >20.2\nb                 4123        10985          349         >21.1\nu                 3917        10825         1082         >21.5\nw1                3711         9912         1169         >21.4\nm2                3506        15760         1240         >21.3\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.01 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 18597,
  "createdOn": 1447413223000,
  "email": "sro@mssl.ucl.ac.uk",
  "subject": "GRB 151112A: Swift/UVOT Upper Limits",
  "submitter": "Samantha Oates at MSSL  <sro@mssl.ucl.ac.uk>",
  "eventId": "GRB 151112A"
}