An algorithm for detection of extreme mass ratio inspirals in LISA data

Details An algorithm for detection of extreme mass ratio inspirals in LISA data An algorithm for detection of extreme mass ratio inspirals in LISA data

2009-02-24

arxiv.org/abs/0902.4133v1

Class.Quant.Grav.26:135004,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

14 pages, 4 figures

Scientific paper

10.1088/0264-9381/26/13/135004

The gravitational wave signal from a compact object spiralling toward a massive black hole (MBH) is thought to be one of the most difficult sources to detect in the LISA data stream. Due to the large parameter space of possible signals and many orbital cycles spent in the sensitivity band of LISA, it has been estimated previously that of the order of 10^{35} templates would be required for a fully coherent search with a template grid, which is computationally impossible. Here we describe an algorithm based on a constrained Metropolis-Hastings stochastic search which allows us to find and accurately estimate parameters of isolated EMRI signals buried in Gaussian instrumental noise. We illustrate the effectiveness of the algorithm with results from searches of the Mock LISA Data Challenge round 1B data sets.

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