Event rate estimates for LISA extreme mass ratio capture sources

Details Event rate estimates for LISA extreme mass ratio capture sources Event rate estimates for LISA extreme mass ratio capture sources

2004-05-28

arxiv.org/abs/gr-qc/0405137v1

Class.Quant.Grav. 21 (2004) S1595-S1606

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages, 1 figure, to appear in GWDAW 8 proceedings

Scientific paper

10.1088/0264-9381/21/20/003

One of the most exciting prospects for the LISA gravitational wave observatory is the detection of gravitational radiation from the inspiral of a compact object into a supermassive black hole. The large inspiral parameter space and low amplitude of the signal makes detection of these sources computationally challenging. We outline here a first cut data analysis scheme that assumes realistic computational resources. In the context of this scheme, we estimate the signal-to-noise ratio that a source requires to pass our thresholds and be detected. Combining this with an estimate of the population of sources in the Universe, we estimate the number of inspiral events that LISA could detect. The preliminary results are very encouraging -- with the baseline design, LISA can see inspirals out to a redshift z=1 and should detect over a thousand events during the mission lifetime.

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