{
  "bibcode": "2013GCN.15343....1H",
  "body": "L. M. Z. Hagen (PSU) and K. L. Page (U. Leicester)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began observations of the field of GRB 131011A\nstarting 83.9 ks after the Fermi trigger 403206457 (Kasliwal et al., GCN 15324).\nNo optical afterglow consistent with the PTF position is detected in the initial UVOT\nexposures.\n\nPreliminary 3-sigma upper limits using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the initial exposures are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)         Mag\n\nw2           83920    97601         4896         >22.10\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.02 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 15343,
  "createdOn": 1381871472000,
  "email": "siegel@swift.psu.edu",
  "subject": "GRB 131011A: Swift/UVOT Upper Limits",
  "submitter": "Mike Siegel at PSU/Swift MOC  <siegel@swift.psu.edu>",
  "eventId": "GRB 131011A"
}