Estimating the sensitivity of wide-parameter-space searches for gravitational-wave pulsars

Details Estimating the sensitivity of wide-parameter-space searches for gravitational-wave pulsars Estimating the sensitivity of wide-parameter-space searches for gravitational-wave pulsars

2011-11-23

arxiv.org/abs/1111.5650v3

Phys. Rev. D 85, 042003 (2012)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 figures, 2 tables, REVTeX 4.1; minor typos corrected from v2, updated references

Scientific paper

10.1103/PhysRevD.85.042003

This paper presents an in-depth study of how to estimate the sensitivity of searches for gravitational-wave pulsars -- rapidly-rotating neutron stars which emit quasi-sinusoidal gravitational waves. It is particularly concerned with searches over a wide range of possible source parameters, such as searches over the entire sky and broad frequency bands. Traditional approaches to estimating the sensitivity of such searches use either computationally-expensive Monte Carlo simulations, or analytic methods which sacrifice accuracy by making an unphysical assumption about the population of sources being searched for. This paper develops a new, analytic method of estimating search sensitivity which does not rely upon this unphysical assumption. Unlike previous analytic methods, the new method accurately predicts the sensitivity obtained using Monte Carlo simulations, while avoiding their computational expense. The change in estimated sensitivity due to properties of the search template bank, and the geographic configuration of the gravitational wave detector network, are also investigated.

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