{
  "bibcode": "2013GCN.14902....1O",
  "body": "S. R. Oates (MSSL-UCL) and E. Sonbas (NASA/GSFC/Adiyaman Univ.)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 130615A\n180 s after the BAT trigger (Sonbas et al., GCN Circ. 14897).\nNo optical afterglow consistent with the optical position\n(Elliott et al. GCN Circ. 14898)\nis 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\nu_FC               180          430          246         >20.1\nv                  463         7314          580         >20.1\nu                  180        12850         1827         >21.3\nw1                 512        11936         1434         >20.9\nm2                 488         7445          672         >20.3\nw2                 439        13208          933         >20.8\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.12 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 14902,
  "createdOn": 1371324071000,
  "email": "sro@mssl.ucl.ac.uk",
  "subject": "GRB 130615A: Swift/UVOT Upper Limits",
  "submitter": "Samantha Oates at MSSL  <sro@mssl.ucl.ac.uk>",
  "eventId": "GRB 130615A"
}