Journal Article

On the detectability of eccentric binary pulsars

Manjari Bagchi, Duncan R. Lorimer and Spencer Wolfe

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 432, issue 2, pages 1303-1314
Published in print June 2013 | ISSN: 0035-8711
Published online April 2013 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1093/mnras/stt559
On the detectability of eccentric binary pulsars

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By generalizing earlier work of Johnston and Kulkarni, we present a detailed description of the reduction in the signal-to-noise ratio for observations of binary pulsars. We present analytical expressions, and provide software, to calculate the sensitivity reduction for orbits of arbitrary eccentricity. We find that this reduction can be quite significant, especially in the case of a massive companion like another neutron star or a black hole. On the other hand, the reduction is less for highly eccentric orbits. We also demonstrate that this loss of sensitivity can be recovered by employing ‘acceleration search’ or ‘acceleration-jerk search’ algorithms.

Keywords: methods: analytical; methods: numerical; binaries: general; stars: neutron; pulsars: general

Journal Article.  6806 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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