[vsnet-grb-info 22390] LIGO/Virgo S190510g: Update on candidate significance

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24489
SUBJECT: LIGO/Virgo S190510g: Update on candidate significance
DATE:    19/05/11 20:19:22 GMT
FROM:    Shasvath J. Kapadia at U. of Wisconsin, Milwaukee  <kapadia at uwm.edu>

The LIGO Scientific Collaboration and the Virgo Collaboration report:


We have conducted subsequent analysis of data around the time of S190510g

including LIGO and Virgo data collected in the 24 hour period after the

event.  The resulting re-estimate of the background model yields a

FAR (False Alarm Rate) of 1 in 3.6 years compared to 1 in 37 years initially

reported in GCN 24442.


Using the updated background model, the classification of the event,

in order of descending probability, is estimated to be:

Terrestrial (58%), BNS (42%), NSBH (<1%), BBH (<1%), or MassGap (<1%).


Further analysis of the event is ongoing. Updates will be provided

as and when available.


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/>.