A more effective coordinate system for parameter estimation of precessing compact binaries from gravitational waves
Abstract
Groundbased gravitational wave detectors are sensitive to a narrow range of frequencies, effectively taking a snapshot of merging compactobject binary dynamics just before merger. We demonstrate that by adopting analysis parameters that naturally characterize this "picture," the physical parameters of the system can be extracted more efficiently from the gravitational wave data and interpreted more easily. We assess the performance of Markov chain Monte Carlo parameter estimation in this physically intuitive coordinate system, defined by (a) a frame anchored on the binary's spins and orbital angular momentum and (b) a time at which the detectors are most sensitive to the binary's gravitational wave emission. Using anticipated noise curves for the advancedgeneration LIGO and Virgo gravitational wave detectors, we find that this careful choice of reference frame and reference time significantly improves parameter estimation efficiency for binary neutron stars, neutron starblack hole, and binary black hole signals.
 Publication:

Physical Review D
 Pub Date:
 July 2014
 DOI:
 10.1103/PhysRevD.90.024018
 arXiv:
 arXiv:1404.7070
 Bibcode:
 2014PhRvD..90b4018F
 Keywords:

 04.30.w;
 97.60.Lf;
 97.60.Jd;
 Gravitational waves: theory;
 Black holes;
 Neutron stars;
 General Relativity and Quantum Cosmology
 EPrint:
 11 pages, 5 figures, submitted to Phys. Rev. D