{
  "bibcode": "2018GCN.22483....1O",
  "body": "S. R. Oates (U.Warwick) and P. D'Avanzo (INAF-OAB)\nreport on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 180314A\n167 s after the BAT trigger (D'Avanzo et al., GCN Circ. 22478).\nA source consistent with the XRT position\n(Osborne et al. GCN Circ. 22480)\nis detected in the initial UVOT exposures.\n\nThe preliminary UVOT position is:\n   RA  (J2000) =  06:37:03.68 =  99.26535 (deg.)\n   Dec (J2000) = -24:29:46.0  = -24.49610 (deg.)\nwith an estimated uncertainty of 0.42 arc sec. (radius, 90% confidence).\n\nPreliminary detections using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are:\n\nFilter         T_start(s)   T_stop(s)      Exp(s)           Mag\n\nwhite(FC)          167          317          147         16.28 +/- 0.03\nwhite              606          626           19         17.86 +/- 0.15\nv                  829          849           19         17.07 +/- 0.25\nb                  755          774           19         18.09 +/- 0.28\nu                  326          576          246         16.95 +/- 0.06\nw1                 705         1131           39         17.98 +/- 0.33\nm2                 680         1106           58         18.12 +/- 0.35\nw2                 631         1578          117         18.75 +/- 0.30\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.08 in the direction of the burst\n(Schlegel et al. 1998).\n\n\n\n\n\n\n\n---------------------------------------------\n\nDr Samantha Oates\n\nLeverhulme Early Career Fellow\nDepartment of Physics\nUniversity of Warwick\nCoventry\nCV4, UK\nTel:  +44 (024) 765 23383\nEmail: s.oates@warwick.ac.uk<mailto:s.oates@warwick.ac.uk>\n-----------------------------------------------",
  "circularId": 22483,
  "createdOn": 1521028194000,
  "email": "sro@mssl.ucl.ac.uk",
  "subject": "GRB 180314A: Swift/UVOT Detection",
  "submitter": "Samantha Oates at MSSL  <sro@mssl.ucl.ac.uk>",
  "eventId": "GRB 180314A"
}