TITLE:   GCN CIRCULAR
NUMBER:  36885
SUBJECT: LIGO/Virgo/KAGRA S240716b: Updated Sky localization
DATE:    24/07/16 12:47:25 GMT
FROM:    Aaron Zimmerman at U. of Texas at Austin <aaron.zimmerman@utexas.edu>

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

We 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 S240716b (GCN Circular 36879). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.multiorder.fits,1, distributed via GCN Notice, is available for retrieval from the GraceDB event page:

https://gracedb.ligo.org/superevents/S240716b

For the Bilby.multiorder.fits,1 sky map, the 90% credible region is 10324 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 1821 +/- 686 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