Skip to main content
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements

GCN Circular 26383

LIGO/Virgo S191129u: Updated Sky Localization
2019-12-08T21:30:47Z (5 years ago)
Leo Singer at GSFC <>
The LIGO Scientific Collaboration and the Virgo Collaboration report:

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
S191129u (GCN Circular 26303).
Parameter estimation has been performed using LALInference [1] and a
new sky map, LALInference.fits.gz,0, distributed via GCN Notice, is
available for retrieval from the GraceDB event page:

The preferred sky map at this time is LALInference.fits.gz,0. For the
LALInference.fits.gz,0 sky map, the 90% credible region is 852 deg2.
Marginalized over the whole sky, the a posteriori luminosity distance
estimate is 742 +/- 180 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