GCN Circular 34212
Subject
LIGO/Virgo/KAGRA S230708t: Updated Sky localization
Date
2023-07-13T17:26:02Z (a year ago)
From
Patricia Schmidt at University of Birmingham <patricia.schmidt@ligo.org>
The LIGO Scientific Collaboration, the Virgo Collaboration, and the
KAGRA Collaboration report:
We have conducted further offline analysis of the LIGO Hanford Observatory
(H1) and LIGO Livingston Observatory (L1) data around the time of the
compact binary merger (CBC) candidate S230708t (GCN Circular 34194).
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/S230708t
For the Bilby.offline0.multiorder.fits,0 sky map, the 90% credible
region is 1227 deg2. Marginalized over the whole sky, the a posteriori
luminosity distance estimate is 3010 +/- 988 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)