GCN Circular 38955
Subject
LIGO/Virgo/KAGRA S250114ax: Updated Sky localization
Date
2025-01-15T17:12:57Z (5 days ago)
From
Patricia Schmidt at University of Birmingham <patricia.schmidt@ligo.org>
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 S250114ax (GCN Circular ***CITE ORIGINAL GCN ID, e.g. 38932***). 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/S250114ax
For the Bilby.multiorder.fits,0 sky map, the 90% credible region is 145 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 385 +/- 49 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