{
  "bibcode": "2016GCN.19801....1L",
  "body": "S.J. LaPorte (PSU) and C. B. Markwardt (NASA/GSFC)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 160815A\n90 s after the BAT trigger (Markwardt et al., GCN Circ. 19794). We detect a\nfading source consistent with the XRT position (Beardmore et al. GCN Circ.\n19796).\n\nPreliminary detections using the UVOT photometric system (Breeveld et al.\n2011, AIP Conf. Proc. 1358, 373) for the early exposures are:\n\nFilter         T_start(s)   T_stop(s)  Exp(s)   Mag\n\nwhite           90             239       146     18.17+-0.14   \nwhite          582            5549       402    >19.72   \nv              632            5960       274    >17.99   \nb              557            5344       254    >18.64   \nu              301            6449       554    >18.85   \nuvw1           681            6370       432    >18.67   \nuvm2           656            6165       274    >18.64   \nuvw2           607            5755       274    >18.70   \n\n\nThe magnitude is not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.12 in the direction of the burst\n(Schlegel et al. 1998).",
  "circularId": 19801,
  "createdOn": 1471384404000,
  "email": "siegel@swift.psu.edu",
  "subject": "GRB 160815A: Swift/UVOT Detection",
  "submitter": "Mike Siegel at PSU/Swift MOC  <siegel@swift.psu.edu>",
  "eventId": "GRB 160815A"
}