{
  "bibcode": "2016GCN.19643....1B",
  "body": "B. G. Balzer  (PSU) and C. B. Markwardt (GSFC)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 160629A\n77035 s after the INTEGRAL trigger (Gotz et al., GCN Circ. 19621).\nNo optical afterglow consistent with the optical position\n(Klotz et al., GCN Circ 19622, Sokolov, et al. GCN Circ 19623) or the\nXRT position (D�Ai� et al., GCN Circ. 19641) is detected.\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\nu                77035        89233         2633         >21.4\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.40 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 19643,
  "createdOn": 1467469034000,
  "email": "siegel@swift.psu.edu",
  "subject": "GRB 160629A: Swift/UVOT Upper Limits",
  "submitter": "Mike Siegel at PSU/Swift MOC  <siegel@swift.psu.edu>",
  "eventId": "GRB 160629A"
}