{
  "bibcode": "2017GCN.21751....1L",
  "body": "The LIGO Scientific Collaboration and the Virgo Collaboration report:\n\nWe have re-analyzed data from LIGO Hanford Observatory (H), LIGO\nLivingston Observatory (L), and Virgo (V) around the time of the binary\nblack hole merger candidate G298936 (GCNs 21656 and 21661) taking into\naccount our current understanding of calibration uncertainties.\n\nParameter estimation has been performed using LALInference (Veitch et al.,\nPRD 91, 042003) and a new sky map, LALInference_r1.fits.gz, can be\nretrieved from the GraceDB event page:\n\nhttps://gracedb.ligo.org/events/G298936\n\nThis is the preferred sky map at this time.\n\nThe new localization is consistent with but slightly smaller than the\nBAYESTAR localization using HLV data (GCN 21661, bayestar-HLV.fits.gz).\nThe 50% area has decreased from 277 to 207 deg2 and the 90% area has\ndecreased from 1219 to 952 deg2. The all-sky, marginalized luminosity\ndistance estimate is 1738 +/- 477 Mpc (a posteriori mean +/- standard\ndeviation), largely consistent with the original estimate.",
  "circularId": 21751,
  "createdOn": 1504022112000,
  "email": "leo.p.singer@nasa.gov",
  "subject": "LIGO/Virgo G298936: Updated localization from parameter estimation on LIGO and Virgo data",
  "submitter": "Leo Singer at NASA/GSFC  <leo.p.singer@nasa.gov>",
  "eventId": "LIGO/Virgo G298936"
}