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Efficient method for measuring the parameters encoded in a gravitational-wave signal

By Carl-Johan Haster, Ilya Mandel and Will M. Farr

Abstract

Once upon a time, predictions for the accuracy of inference on gravitational-wave signals relied on computationally inexpensive but often inaccurate techniques. Recently, the approach has shifted to actual inference on noisy signals with complex stochastic Bayesian methods, at the expense of significant computational cost. Here, we argue that it is often possible to have the best of both worlds: a Bayesian approach that incorporates prior information and correctly marginalizes over uninteresting parameters, providing accurate posterior probability distribution functions, but carried out on a simple grid at a low computational cost, comparable to the inexpensive predictive techniques.Comment: 17 pages, 5 figure

Topics: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology, Physics - Data Analysis, Statistics and Probability
Publisher: 'IOP Publishing'
Year: 2015
DOI identifier: 10.1088/0264-9381/32/23/235017
OAI identifier: oai:arXiv.org:1502.05407

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