GCN Circular 34947
Subject
LIGO/Virgo/KAGRA S231104ac: Updated Sky localization
Date
2023-11-04T20:10:57Z (a year ago)
From
Anjali Yelikar at Rochester Institute of Technology <ay2016@g.rit.edu>
Via
Web form
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 S231104ac (GCN Circular 34942). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.multiorder.fits, distributed via GCN Notice, is available for retrieval from the GraceDB event page:
https://gracedb.ligo.org/superevents/S231104ac
For the Bilby.multiorder.fits sky map, the 90% credible region is 759 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 1357 +/- 321 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) and Morisaki et al. arXiv:2307.13380 (2023)