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

GCN Circular 24584

LIGO/Virgo S190512at: Updated sky localization
2019-05-17T17:42:03Z (5 years ago)
Deep Chatterjee at University of Wisconsin, Milwaukee <>
The LIGO Scientific Collaboration and the Virgo Collaboration report:

We have re-analyzed LIGO and Virgo data around the time of the compact
binary coalescence (CBC) candidate S190512at (GCN 24503). 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:

The preferred skymap at this time is LALInference.fits.gz. For the
LALInference.fits.gz skymap, the 90% credible region is 252 deg2.
Marginalized over the whole sky, the a posteriori luminosity distance
estimate is 1388 +/- 322 Mpc (a posteriori mean +/- standard

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)
Looking for U.S. government information and services? Visit