{
  "bibcode": "2017GCN.21527....1L",
  "body": "The LIGO Scientific Collaboration and the Virgo Collaboration report:\n\nParameter estimation has been performed using LALInference (Veitch et\nal., PRD 91, 042003) and a revised sky map, preliminary-LALInference.fits.gz, is\navailable for retrieval from the GraceDB event page:\nhttps://gracedb.ligo.org/events/G298048\n\n\nWe caution that this is a preliminary map from the offline parameter \nestimation. This analysis uses data from the LIGO Hanford, LIGO Livingston,\nand Virgo detectors with the noise transient in Livingston\nremoved from the data prior to the analysis, as described in GCN 21513. \nPosterior chains in the parameter estimation may not yet have fully converged.\n\nThe 50% and 90% credible regions span about 8.6 and 33.6 square\ndegrees, respectively, which are somewhat larger than the initial\nBAYESTAR sky map. The centroid (maximum a posteriori) sky \nlocation is R.A.=13h09m, Dec.=-25d37m.\n\nWe will continue to refine the sky map as offline parameter estimation\nimproves and as we apply additional methods of cleaning the data.",
  "circularId": 21527,
  "createdOn": 1503014080000,
  "email": "ressick@mit.edu",
  "subject": "LIGO/Virgo G298048: Updated sky map from gravitational-wave data",
  "submitter": "Reed Clasey Essick at MIT  <ressick@mit.edu>",
  "eventId": "LIGO/Virgo G298048"
}