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GCN Circular 37308

Subject

LIGO/Virgo/KAGRA S240825ar: Updated Sky localization

Date

2024-08-27T07:48:43Z (2 months ago)

From

Nihar.Gupte@aei.mpg.de

Via

Web form

We have conducted further analysis of the LIGO Hanford Observatory (H1), LIGO Livingston Observatory (L1), and Virgo Observatory (V1) data around the time of the compact binary merger (CBC) candidate S240825ar (GCN Circular 37268Not found
 
 
). 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/S240825ar

For the Bilby.multiorder.fits,0 sky map, the 90% credible region is 351 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 1311 +/- 309 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/ab06fcNot found
 
 
 and Morisaki et al. (2023) arXiv:2307.13380Not found