{
  "bibcode": "2024GCN.38144....1L",
  "submittedHow": "web",
  "body": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Livingston Observatory (L1) and Virgo Observatory (V1) data around the time of the compact binary merger (CBC) candidate S241109p (GCN Circular 38138). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S241109p\n\nAfter parameter estimation by RapidPE-RIFT [2], the updated classification of the GW signal, in order of descending probability, is BBH (>99%), Terrestrial (<1%), NSBH (<1%), or BNS (<1%).\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is 1761 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 2282 +/- 1082 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide https://emfollow.docs.ligo.org/.\n\n [1] Ashton et al. ApJS 241, 27 (2019) doi:10.3847/1538-4365/ab06fc and Morisaki et al. PRD 108, 123040 (2023) doi:10.1103/PhysRevD.108.123040\n [2] Rose et al. (2022) arXiv:2201.05263 and Pankow et al. PRD 92, 023002 (2015) doi:10.1103/PhysRevD.92.023002",
  "format": "text/plain",
  "createdOn": 1731179751887,
  "eventId": "LIGO/Virgo/KAGRA S241109p",
  "circularId": 38144,
  "subject": "LIGO/Virgo/KAGRA S241109p: Updated Sky localization and Source Classification",
  "submitter": "MUKESH SINGH at Cardiff University <mukesh.singh@ligo.org>"
}