Gravitational-wave constraints on the equatorial ellipticity of millisecond pulsars

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Abbott, B. P. and Angelova, S. V. and Gier, C. and Hill, P. and Reid, S. and Wallace, G. S., LIGO Scientific Collaboration and Virgo Collaboration (2020) Gravitational-wave constraints on the equatorial ellipticity of millisecond pulsars. Astrophysics Journal Letters, 902 (1). L21. ISSN 2041-8213 (https://doi.org/10.3847/2041-8213/abb655)

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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.

ORCID iDs

Abbott, B. P., Angelova, S. V., Gier, C., Hill, P. ORCID logoORCID: https://orcid.org/0000-0003-4826-3531, Reid, S. and Wallace, G. S.;
  • Item type:Article
    ID code:74602
    Dates:
    Date
    Event
    12 October 2020
    Published
    5 September 2020
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Engineering > Biomedical Engineering
    Depositing user: Pure Administrator
    Date deposited:16 Nov 2020 11:43
    Last modified:05 Dec 2024 01:18
    URI:https://strathprints.strath.ac.uk/id/eprint/74602
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