{
  "bibcode": "2016GCN.19398....1H",
  "body": "L. M. Z. Hagen (PSU) reports on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 160506A\n102 s after the BAT trigger (Hagen et al., GCN Circ. 19394). No optical\nafterglow consistent with the XRT position (Osborne et al. GCN Circ.\n19395) is detected in the initial UVOT exposures. Preliminary 3-sigma\nupper limits using the UVOT photometric system (Breeveld et al. 2011,\nAIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure\nand subsequent exposures are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)         Mag\n\nv                  407         2279          233        >19.36\nb                  357         2229          252        >20.37\nu_FC               101          351          245        >20.13\nu                  101         2353          626        >20.58\nuvw1               457         2329          233        >19.75\nuvm2               432         2304          233        >19.52\nuvw2               383         2255          252        >19.86\n\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.26 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 19398,
  "createdOn": 1462547591000,
  "email": "lea.zernow.hagen@gmail.com",
  "subject": "GRB 160506A: Swift/UVOT Upper Limits",
  "submitter": "Lea Hagen at PSU  <lea.zernow.hagen@gmail.com>",
  "eventId": "GRB 160506A"
}