{
  "body": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the\nKAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory\n(H1) and LIGO Livingston Observatory (L1) data around the time of the\ncompact binary merger (CBC) candidate S230920al (GCN Circular 34741). Parameter estimation has been\nperformed using Bilby [1] and a new sky map, Bilby.multiorder.fits,0,\ndistributed via GCN Notice, is available for retrieval from the\nGraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230920al\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is\n2180 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 3139 +/- 1003 Mpc (a posteriori mean\n+/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\nhttps://emfollow.docs.ligo.org/userguide/.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)",
  "createdOn": 1695229570635,
  "submitter": "naresh.adhikari@ligo.org",
  "eventId": "LIGO/Virgo/KAGRA S230920al",
  "bibcode": "2023GCN.34746....1L",
  "circularId": 34746,
  "subject": "LIGO/Virgo/KAGRA S230920al: Updated Sky localization",
  "submittedHow": "web"
}