A method for narrow-band searches of continuous gravitational wave signals

Abstract

Targeted searches of continuous waves from spinning neutron stars normally assume that the frequency of the gravitational wave signal is at a given known ratio with respect to the rotational frequency of the source, e.g. twice for an asymmetric neutron star rotating around a principal axis of inertia. In fact this assumption may well be invalid if, for instance, the gravitational wave signal is due to a solid core rotating at a slightly different rate with respect to the star crust. In this paper we present a method for {\it narrow-band} searches of continuous gravitational wave signals from known pulsars in the data of interferometric detectors. This method assumes source position is known to high accuracy, while a small frequency and spin-down range around the electromagnetic-inferred values is explored. Barycentric and spin-down corrections are done with an efficient time-domain procedure. Sensitivity and computational efficiency estimates are given and results of tests done using simulated data are also discussed.

13 pages; 6 figures; accepted in PRD

References in corpus (4)

• Maximum elastic deformations of compact stars with exotic equations of state
• Searching for gravitational waves from Cassiopeia A with LIGO
• Are neutron stars with crystalline colour superconducting cores interesting for the LIGO experiment?
• Implementation of barycentric resampling for continuous wave searches in gravitational wave data

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