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Gravitational-wave Constraints on the Equatorial Ellipticity of Millisecond Pulsars

Gravitational-wave Constraints on the Equatorial Ellipticity of Millisecond Pulsars
Gravitational-wave Constraints on the Equatorial Ellipticity of Millisecond Pulsars
We present a search for continuous gravitational waves from five radio pulsars, comprising three recycled pulsars (PSR J0437-4715, PSR J0711-6830, and PSR J0737-3039A) and two young pulsars: the Crab pulsar (J0534+2200) and the Vela pulsar (J0835-4510). We use data from the third observing run of Advanced LIGO and Virgo combined with data from their first and second observing runs. For the first time, we are able to match (for PSR J0437-4715) or surpass (for PSR J0711-6830) the indirect limits on gravitational-wave emission from recycled pulsars inferred from their observed spin-downs, and constrain their equatorial ellipticities to be less than 10-8. For each of the five pulsars, we perform targeted searches that assume a tight coupling between the gravitational-wave and electromagnetic signal phase evolution. We also present constraints on PSR J0711-6830, the Crab pulsar, and the Vela pulsar from a search that relaxes this assumption, allowing the gravitational-wave signal to vary from the electromagnetic expectation within a narrow band of frequencies and frequency derivatives.
2041-8205
Abbott, R.
ceb7bd1e-f214-46dd-9972-a194692a86aa
Abbott, T.D.
40955bf8-1011-46ab-a787-34050875d7fe
Abraham, Sharanya
a3735e15-ec38-4321-9183-299e6f6190ac
Acernese, F.
812386db-bec3-4d2d-9e29-ca63428d1e50
Ackley, Kendall
3837d24d-f70c-45a8-89eb-63f8f816dd64
Jones, David
b8f3e32c-d537-445a-a1e4-7436f472e160
Abbott, R.
ceb7bd1e-f214-46dd-9972-a194692a86aa
Abbott, T.D.
40955bf8-1011-46ab-a787-34050875d7fe
Abraham, Sharanya
a3735e15-ec38-4321-9183-299e6f6190ac
Acernese, F.
812386db-bec3-4d2d-9e29-ca63428d1e50
Ackley, Kendall
3837d24d-f70c-45a8-89eb-63f8f816dd64
Jones, David
b8f3e32c-d537-445a-a1e4-7436f472e160

Abbott, R., Abbott, T.D., Abraham, Sharanya, Acernese, F., Ackley, Kendall and Jones, David (2020) Gravitational-wave Constraints on the Equatorial Ellipticity of Millisecond Pulsars. The Astrophysical Journal Letters, 902, [L21]. (doi:10.3847/2041-8213/abb655).

Record type: Article

Abstract

We present a search for continuous gravitational waves from five radio pulsars, comprising three recycled pulsars (PSR J0437-4715, PSR J0711-6830, and PSR J0737-3039A) and two young pulsars: the Crab pulsar (J0534+2200) and the Vela pulsar (J0835-4510). We use data from the third observing run of Advanced LIGO and Virgo combined with data from their first and second observing runs. For the first time, we are able to match (for PSR J0437-4715) or surpass (for PSR J0711-6830) the indirect limits on gravitational-wave emission from recycled pulsars inferred from their observed spin-downs, and constrain their equatorial ellipticities to be less than 10-8. For each of the five pulsars, we perform targeted searches that assume a tight coupling between the gravitational-wave and electromagnetic signal phase evolution. We also present constraints on PSR J0711-6830, the Crab pulsar, and the Vela pulsar from a search that relaxes this assumption, allowing the gravitational-wave signal to vary from the electromagnetic expectation within a narrow band of frequencies and frequency derivatives.

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More information

Accepted/In Press date: 5 September 2020
e-pub ahead of print date: 12 October 2020
Published date: 12 October 2020

Identifiers

Local EPrints ID: 453751
URI: http://eprints.soton.ac.uk/id/eprint/453751
ISSN: 2041-8205
PURE UUID: aff5056e-f6d9-4a24-9a3e-64cb40dc99f0
ORCID for David Jones: ORCID iD orcid.org/0000-0002-0117-7567

Catalogue record

Date deposited: 24 Jan 2022 17:35
Last modified: 28 Apr 2022 01:45

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Contributors

Author: R. Abbott
Author: T.D. Abbott
Author: Sharanya Abraham
Author: F. Acernese
Author: Kendall Ackley
Author: David Jones ORCID iD

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