TITLE: GCN CIRCULAR NUMBER: 24228 SUBJECT: LIGO/Virgo S190425z: Updated localization from LIGO and Virgo data DATE: 19/04/26 15:32:37 GMT FROM: Leo Singer at GSFC The LIGO Scientific Collaboration and the Virgo Collaboration report: We have re-analyzed LIGO data around the time of the compact binary coalescence (CBC) candidate S190425z (GCN 24168). Parameter estimation has been performed using LALInference [1] and a new sky map, LALInference.fits.gz, is available for retrieval from the GraceDB event page: https://gracedb.ligo.org/superevents/S190425z For the LALInference.fits.gz skymap, the 90% credible region is 7461 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 156 +/- 41 Mpc (a posteriori mean +/- standard deviation). This is the preferred sky map at this time. For further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo Public Alerts User Guide . [1] Veitch et al. PRD 91, 042003 (2015)