Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 34152

Subject
LIGO/Virgo/KAGRA S230630bq: Updated Sky localization
Date
2023-07-06T18:52:12Z (a year ago)
From
jgolomb@caltech.edu
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 S230630bq (GCN Circular 34127). 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/S230630bq

For the Bilby.offline0.multiorder.fits,0 sky map, the 90% credible region is 1215 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 999 +/- 286 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)
Looking for U.S. government information and services? Visit USA.gov