TITLE:   GCN CIRCULAR
NUMBER:  36511
SUBJECT: LIGO/Virgo/KAGRA S240514c: Updated Sky localization
DATE:    24/05/18 14:35:20 GMT
FROM:    Soichiro Morisaki at U. of Tokyo <soichiro.morisaki@ligo.org>

The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:

We have conducted further analysis of the LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S240514c (GCN Circular 36473). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.offline0.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page:

https://gracedb.ligo.org/superevents/S240514c

For the Bilby.offline0.multiorder.fits,0 sky map, the 90% credible region is 30758 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 4182 +/- 1833 Mpc (a posteriori mean +/- standard deviation).

For 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/.

 [1] Ashton et al. ApJS 241, 27 (2019) doi:10.3847/1538-4365/ab06fc and Morisaki et al. (2023) arXiv:2307.13380