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Is timing noise important in the gravitational wave detection of neutron stars?

Is timing noise important in the gravitational wave detection of neutron stars?
Is timing noise important in the gravitational wave detection of neutron stars?
In this paper we ask whether the phenomenon of timing noise long known in electromagnetic pulsar astronomy is likely to be important in gravitational wave (GW) observations of spinning-down neutron stars. We find that timing noise is strong enough to be of importance only in the young pulsars, which must have larger triaxialities than theory predicts for their GW emission to be detectable.
However, assuming that their GW emission is detectable, we list the pulsars for which timing noise is important, either because it is strong enough that its neglect by the observer would render the source undetectable or else because it is a measurable feature of the GW signal. We also find that timing noise places a limit on the observation duration of a coherent blind GW search, and suggest that hierarchical search techniques might be able to cope with this problem. Demonstration of the presence or absence of timing noise in the GW channel would give a new probe of neutron star physics.
1550-7998
042002-[9pp]
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160

Jones, D.I. (2004) Is timing noise important in the gravitational wave detection of neutron stars? Physical Review D, 70 (4), 042002-[9pp]. (doi:10.1103/PhysRevD.70.042002).

Record type: Article

Abstract

In this paper we ask whether the phenomenon of timing noise long known in electromagnetic pulsar astronomy is likely to be important in gravitational wave (GW) observations of spinning-down neutron stars. We find that timing noise is strong enough to be of importance only in the young pulsars, which must have larger triaxialities than theory predicts for their GW emission to be detectable.
However, assuming that their GW emission is detectable, we list the pulsars for which timing noise is important, either because it is strong enough that its neglect by the observer would render the source undetectable or else because it is a measurable feature of the GW signal. We also find that timing noise places a limit on the observation duration of a coherent blind GW search, and suggest that hierarchical search techniques might be able to cope with this problem. Demonstration of the presence or absence of timing noise in the GW channel would give a new probe of neutron star physics.

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More information

Published date: 20 August 2004

Identifiers

Local EPrints ID: 29274
URI: http://eprints.soton.ac.uk/id/eprint/29274
ISSN: 1550-7998
PURE UUID: b818ee2b-ae54-4ead-a462-ed4d0ebfe614
ORCID for D.I. Jones: ORCID iD orcid.org/0000-0002-0117-7567

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Date deposited: 12 May 2006
Last modified: 28 Jun 2022 01:37

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