GCN Circular 34245
Subject
LIGO/Virgo/KAGRA S230723ac: Updated Sky localization
Date
2023-07-24T02:22:18Z (2 years ago)
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 Hanford Observatory
(H1) and LIGO Livingston Observatory (L1) data around the time of the
compact binary merger (CBC) candidate S230723ac (GCN Circular 34235). 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:
https://gracedb.ligo.org/superevents/S230723ac
For the Bilby.multiorder.fits,0 sky map, the 90% credible region is
1117 deg2. Marginalized over the whole sky, the a posteriori
luminosity distance estimate is 1551 +/- 436 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/userguide/.
[1] Ashton et al. ApJS 241, 27 (2019)