Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-05-26
Phys.Rev. D71 (2005) 123002
Astronomy and Astrophysics
Astrophysics
6 pages, 1 figure, to appear in PRD
Scientific paper
10.1103/PhysRevD.71.123002
We discuss an astrometric timing effect on data analysis of continuous gravitational waves from rapidly rotating isolated neutron stars. Special attention is directed to the possibility of determining their distances by measuring the curvature of the wave fronts. We predict that if continuous gravitational waves from an unknown neutron star with a stable rotation are detected around 1kHz within 1/3yr by initial LIGO detectors and the ellipticity parameter epsilon is smaller than 10^{-6}, the distance r to the source can be estimated with relative error \Delta r/r of \sim 10% by using the broad band configuration of advanced LIGO detectors over 3 years. By combining the observed amplitude of the waves with the estimated distance, information on the parameter $\epsilon$ can be obtained purely through gravitational wave measurements.
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