{
  "bibcode": "2015GCN.17925....1O",
  "body": "S. R. Oates (IAA-CSIC/UCL-MSSL) and E. Troja (NASA/GSFC/UMCP)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 150615A\n122 s after the BAT trigger (Troja et al., GCN Circ. 17923).\nA faint source consistent with the enhanced XRT position\n(Beardmore et al. GCN Circ. 17924) is detected in the\ncombined white exposures.\n\nPreliminary detection and 3-sigma upper limits using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are: \n\nFilter         T_start(s)   T_stop(s)      Exp(s)           Mag\n\nwhite              122         1532          392         20.64 +/- 0.19\nv                  611         1409           97        >18.3\nb                  536         1507           97        >19.9\nu                  280         1482          324        >20.2\nw1                 660         1458           97        >19.2\nm2                 635         1433           97        >18.9\nw2                 586         1557          117        >19.4\n\nThe magnitudes in the table are not corrected for the significant Galactic\nextinction due to the reddening of E(B-V) = 0.33 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 17925,
  "createdOn": 1434375872000,
  "email": "sro@mssl.ucl.ac.uk",
  "subject": "GRB 150615A: Swift/UVOT Detection",
  "submitter": "Samantha Oates at MSSL  <sro@mssl.ucl.ac.uk>",
  "eventId": "GRB 150615A"
}