{
  "bibcode": "2013GCN.15294....1B",
  "body": "A. A. Breeveld (UCL-MSSL) and B. N. Barlow (High Point University) \nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 131002A 77 \ns after the BAT trigger (Barlow et al., GCN Circ. 15283). A fading \nsource consistent with the optical position (Guidorzi GCN Circ. 15282) \nis detected in the initial UVOT exposures.\n\nPreliminary detections and 3-sigma upper limits using the UVOT \nphotometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for \nthe early exposures are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)           Mag\n\nwhite               77          227          147         17.94 � 0.06\nwhite              870         1020          147         19.40 � 0.11\nv                  620         1071           59         18.89 � 0.36\nb                  546          739           39         19.41 � 0.31\nu                  290         7169          736        >21.1\nw1                 669         6964          510        >20.7\nm2                 645        13293          939        >21.1\nw2                 770        11860         1199        >21.5\n\nThe magnitudes in the table are not corrected for the Galactic \nextinction due to the reddening of E(B-V) = 0.08 in the direction of the \nburst (Schlegel et al. 1998).",
  "circularId": 15294,
  "createdOn": 1380800558000,
  "email": "a.breeveld@ucl.ac.uk",
  "subject": "GRB 131002A: Swift/UVOT Detection",
  "submitter": "Alice Breeveld at MSSL-UCL  <a.breeveld@ucl.ac.uk>",
  "eventId": "GRB 131002A"
}