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GCN Circular 18850

Subject
LIGO/Virgo G211117: Distance estimate from GW data compared to redshift of PS15dpn
Date
2016-01-10T14:56:55Z (8 years ago)
From
Peter Shawhan at U of Maryland/LSC <pshawhan@umd.edu>
The LIGO Scientific Collaboration and Virgo report:

We have performed a parameter estimation analysis assuming that G211117 is
a binary coalescence event with (RA,Dec) constrained to be the position of
PS15dpn (Smith et al., GCN 18786; Chambers et al., GCN 18811) and allowing
for calibration uncertainties in the LIGO detectors.  Our preliminary
analysis finds a posterior probability distribution for redshift with a
central 90% credible interval of 0.07 to 0.13.  There is almost no support
for a source at the redshift reported for PS15dpn, z=0.175 (GCN 18811;
also Cenko et al., GCN 18848, measured z=0.174), although it is not entirely
ruled out.
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