Accelerated gravitational wave parameter estimation with reduced order modeling.
Phys Rev Lett
; 114(7): 071104, 2015 Feb 20.
Article
em En
| MEDLINE
| ID: mdl-25763948
ABSTRACT
Inferring the astrophysical parameters of coalescing compact binaries is a key science goal of the upcoming advanced LIGO-Virgo gravitational-wave detector network and, more generally, gravitational-wave astronomy. However, current approaches to parameter estimation for these detectors require computationally expensive algorithms. Therefore, there is a pressing need for new, fast, and accurate Bayesian inference techniques. In this Letter, we demonstrate that a reduced order modeling approach enables rapid parameter estimation to be performed. By implementing a reduced order quadrature scheme within the LIGO Algorithm Library, we show that Bayesian inference on the 9-dimensional parameter space of nonspinning binary neutron star inspirals can be sped up by a factor of â¼30 for the early advanced detectors' configurations (with sensitivities down to around 40 Hz) and â¼70 for sensitivities down to around 20 Hz. This speedup will increase to about 150 as the detectors improve their low-frequency limit to 10 Hz, reducing to hours analyses which could otherwise take months to complete. Although these results focus on interferometric gravitational wave detectors, the techniques are broadly applicable to any experiment where fast Bayesian analysis is desirable.
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MEDLINE
Tipo de estudo:
Prognostic_studies
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En
Ano de publicação:
2015
Tipo de documento:
Article