[vsnet-grb-info 22541] LIGO/Virgo S190521g: Updated sky localization

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24640
SUBJECT: LIGO/Virgo S190521g: Updated sky localization
DATE:    19/05/21 14:22:52 GMT
FROM:    Geoffrey Mo at LIGO  <geoffrey.mo at ligo.org>

The LIGO Scientific Collaboration and the Virgo Collaboration report:

We have conducted further analysis of the LIGO and Virgo data around the
time of the compact binary coalescence (CBC) candidate S190521g
(GCN 24621). Parameter estimation has been performed using
LALInference [1] and a new sky map, LALInference.fits.gz, distributed
via GCN Notice, is available for retrieval from the GraceDB event page:

https://gracedb.ligo.org/superevents/S190521g

LALInference.fits.gz is the preferred sky map at this time.
The 90% credible region is 765 deg2. Marginalized over the whole sky,
the a posteriori luminosity distance estimate is 3931 +/- 953 Mpc
(a posteriori mean +/- standard deviation).

For further information about analysis methodology and the contents
of this alert, refer to the LIGO/Virgo Public Alerts User Guide
<https/emfollow.docs.ligo.org/userguide/>.

[1] Veitch et al. PRD 91, 042003 (2015)