{
  "bibcode": "2019GCN.25525....1B",
  "body": "A. A. Breeveld (UCL-MSSL), S. R. Oates (U. Warwick), F. E. Marshall (NASA/GSFC), N. P. M. Kuin \n(UCL-MSSL),  M.J. Page (UCL-MSSL), P. Brown (TAMU), C. Gronwall (PSU), M. de Pasquale (Istambul U.), \nM. H. Siegel (PSU), A. D'Ai (INAF-IASFPA), P. D'Avanzo (INAF-OAB), S. D. Barthelmy (NASA/GSFC), A. \nP. Beardmore (U. Leicester), D. N. Burrows (PSU), S. Campana (INAF-OAB), S. B. Cenko (NASA/GSFC), G. \nCusumano (INAF-IASF PA), V. D'Elia(ASDC), P. A. Evans (U. Leicester), P. Giommi (ASI), D. Hartmann \n(Clemson U.), J. A. Kennea (PSU), H. A. Krimm (NSF), A. Y. Lien (GSFC/UMBC), D. B. Malesani \n(DARK/NBI), A. Melandri (INAF-OAB), J. A. Nousek (PSU), P. T. O'Brien (U. Leicester), J. P. Osborne \n(U. Leicester), C. Pagani (U. Leicester), K. L. Page (U.Leicester), D.M. Palmer (LANL), M. Perri \n(ASDC), J. L. Racusin (NASA/GSFC), T. Sakamoto (AGU), B. Sbarufatti (INAF-OAB/PSU), G. Tagliaferri \n(INAF-OAB), A. Tohuvavohu (PSU), and E. Troja (NASA/GSFC/UMCP) report on behalf of the Swift team:\n\nThe Swift UVOT instrument started follow up observations of the LIGO-Virgo event S190814bv (LVC GCN \nCirc. 25324) 11ks after the trigger following the tiling programme described in Evans et al. (GNC \nCirc. 25400).\n\nThe UVOT approach for searching for the ultraviolet-optical counterpart has been described in Kuin \net al. (GCN Circ. 24767). The limiting magnitude can vary but typically is 18.6th magnitude (Vega) \nin the U filter. In the 352 fields that were observed, UVOT detected 98 counterpart candidates and \n2257 catalogued galaxies. None of the candidates from the automated processing proved to be a viable \ncandidates. Neither did the additional inspection of all 2257 imaged galaxies lead to a candidate \nmissed by the automated processing.",
  "circularId": 25525,
  "createdOn": 1567017082000,
  "email": "a.breeveld@ucl.ac.uk",
  "subject": "LIGO/Virgo S190814bv: Swift UVOT - no new counterpart candidates identified",
  "submitter": "Alice Breeveld at MSSL-UCL  <a.breeveld@ucl.ac.uk>",
  "eventId": "LIGO/Virgo S190814bv"
}