{
  "bibcode": "2017GCN.20473....1E",
  "body": "P.A Evans (U. Leicester), A. Corsi (TTU), J.A. Kennea (PSU), S.D. \nBarthelmy (NASA/GSFC), A.P. Beardmore (U. Leicester), A.A. Breeveld \n(UCL-MSSL), D.N. Burrows (PSU), S. Campana (INAF-OAB), S.B. Cenko \n(NASA/GSFC), G. Cusumano (INAF-IASF PA), A. D'Ai (INAF-IASFPA), P. \nD'Avanzo (INAF-OAB), V.D'Elia(ASDC), N. Gehrels (NASA/GSFC), P. Giommi \n(ASI), C. Gronwall (PSU), H.A. Krimm (CRESST/GSFC/USRA), N.P.M. Kuin \n(UCL-MSSL), A.Y. Lien (GSFC/UMBC), D. Malesani (DARK/NBI), F.E. Marshall \n(NASA/GSFC), A. Melandri (INAF-OAB), B. Mingo (U. Leicester),  J.A. \nNousek (PSU), S.R. Oates (U. Warwick), P.T. O'Brien (U.  Leicester), \nJ.P. Osborne (U. Leicester), C. Pagani (U. Leicester), K.L.\nPalmer (LANL), M. Perri (ASDC), J.L. Racusin (NASA/GSFC), B. Sbarufatti\n(INAF-OAB/PSU), M.H. Siegel (PSU), G. Tagliaferri (INAF-OAB), E. Troja\n(NASA/GSFC/UMCP), M.M. Kasliwal (Caltech), S.R. Kulkarni (Caltech), D.A. \nFrail (NRAO), N.T. Palliyaguru (TTU) report on behalf of the Swift and \niPTF GW follow-up teams:\n\nSwift has performed follow-up observations of the source iPTF17cw \n(Kasliwal et al., LVC Circ. 20398; Kupfer et al., LVC Circ. 20419). \nSwift-XRT collected 1.3 ks of data from 790.6 ks to 802.8 ks after the \nGW trigger.\n\nNo X-ray events were detected at the location of iPTF17cw. The 3-sigma \nupper limit at this location was 5.3e-3 ct/sec (0.3-10 keV). Assuming a \ntypical AGN spectrum (NH=3e20 cm^-2, Gamma=1.7) this corresponds to a \nflux of 2.19e-13 erg cm^-2 s^-1.",
  "circularId": 20473,
  "createdOn": 1484596045000,
  "email": "pae9@leicester.ac.uk",
  "subject": "LIGO/Virgo G268556: Swift-XRT observations of iPTF17cw",
  "submitter": "Phil Evans at U of Leicester  <pae9@leicester.ac.uk>",
  "eventId": "LIGO/Virgo G268556"
}