{
  "bibcode": "2013GCN.14715....1C",
  "body": "M. M. Chester (PSU) and B. P. Gompertz (U Leicester)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 130527A\n113 s after the BAT trigger (Gompertz et al., GCN Circ. 14703).\nNo optical afterglow consistent with the XRT position (Evans et al. \nGCN Circ. 14705) 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) exposures and subsequent exposures are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)         Mag\n\nwhite_FC           113          263          147         >21.2\nwhite              113         1547          392         >21.1\nwhite             4949        12020          623         >21.8\n\nv                  655         1596          117         >18.7\nv                 5359         5559          197         >19.5\n\nb                  581         1693          114         >20.2\nb                 6179        11579          906         >21.3\n\nu_FC               325          575          246         >20.3\nu                  325         1671          343         >20.2\nu                 5974        18261         1072         >21.1\n\nw1                 704         1646           97         >19.8\nw1                5769        17356         1082         >21.1\n\nm2                 680         1621          117         >20.0\nm2                5564         5764          197         >19.8\n\nw2                 630         1572          117         >20.6\nw2                5154         5354          197         >20.2\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.04 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 14715,
  "createdOn": 1369788604000,
  "email": "chester@astro.psu.edu",
  "subject": "GRB 130527A: Swift/UVOT Upper Limits",
  "submitter": "Margaret Chester at PSU  <chester@astro.psu.edu>",
  "eventId": "GRB 130527A"
}