{
  "bibcode": "2019GCN.24863....1K",
  "body": "N. P. M. Kuin (UCL-MSSL), A. A. Breeveld (MSSL-UCL),  C. Gronwall (PSU),\nF. E. Marshall (NASA/GSFC), S. R. Oates (Uni. of Warwick), M.J. Page\n(UCL-MSSL),\nM. de Pasquale (Istambul U), M. H. Siegel (PSU), A. D'Ai (INAF-IASFPA),\nP. D'Avanzo (INAF-OAB), S. D. Barthelmy (NASA/GSFC), A. P. Beardmore (U.\nLeicester),\nD. N. Burrows (PSU), S. Campana (INAF-OAB), S. B. Cenko (NASA/GSFC),\nG. Cusumano (INAF-IASF PA), V. D'Elia(ASDC), P. A. Evans (U. Leicester),\nP. Giommi (ASI), D. Hartmann (Clemson U.), J. A. Kennea (PSU),\nH. A. Krimm (NSF), A. Y. Lien (GSFC/UMBC), D. B. Malesani (DTU Space),\nA. Melandri (INAF-OAB), J. A.  Nousek (PSU), P. T. O'Brien (U. Leicester),\nJ. P. Osborne (U. Leicester), C. Pagani (U. Leicester), K. L. Page\n(U.Leicester),\nD.M. Palmer (LANL), M. Perri (ASDC), J. L. Racusin (NASA/GSFC), T. Sakamoto\n(AGU),\nB. Sbarufatti (INAF-OAB/PSU), G. Tagliaferri (INAF-OAB), A. Tohuvavohu\n(PSU),\nand E. Troja (NASA/GSFC/UMCP) report on behalf of the Swift team:\n\nThe Swift UVOT instrument started follow up observations of the\nLIGO-Virgo event S190426c (LVC GCN Circ. No. 24237) at 2019-04-26 17:45:00\nUT\n142 minutes after the event. Observations continued for about 48 hours\n(Tohuvavohu et al., GCN Circ. No. 24353).\n\nThe UVOT approach for searching for the ultraviolet-optical counterpart has\nbeen described in Kuin et al. (GCN Circ. No. 24767). The limiting magnitude\ncan vary but typically is 18.6th magnitude (Vega).  In the 894 fields that\nwere observed, UVOT detected 1008 galaxies and 130 counterpart candidates\nbut none of the counterpart candidates from the automated processing proved\nto be a viable source. Neither did the additional inspection of the imaged\ngalaxies lead to a candidate missed by the automated processing.",
  "circularId": 24863,
  "createdOn": 1561038926000,
  "email": "npkuin@gmail.com",
  "subject": "LIGO/Virgo S190426c: Swift UVOT - no new counterpart candidates identified",
  "submitter": "Paul Kuin at MSSL  <npkuin@gmail.com>",
  "eventId": "LIGO/Virgo S190426c"
}