Opportunistic Search for Continuous Gravitational Waves from Compact Objects in Long-period Binaries

Singh, A.; Papa, M. A.

doi:10.3847/1538-4357/acaf80

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…In addition, searches for isolated stars retain some sensitivity to long-period binaries, as shown in a recent studies (Singh et al 2019;Singh and Papa 2023).…”

Section: Results From All-sky Isolated-star Searches Of Ligo and Virg...mentioning

confidence: 90%

Searches for continuous-wave gravitational radiation

Riles

2023

Living Rev Relativ

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Now that detection of gravitational-wave signals from the coalescence of extra-galactic compact binary star mergers has become nearly routine, it is intriguing to consider other potential gravitational-wave signatures. Here we examine the prospects for discovery of continuous gravitational waves from fast-spinning neutron stars in our own galaxy and from more exotic sources. Potential continuous-wave sources are reviewed, search methodologies and results presented and prospects for imminent discovery discussed.

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“…In addition, searches for isolated stars retain some sensitivity to long-period binaries, as shown in a recent studies (Singh et al 2019;Singh and Papa 2023).…”

Section: Results From All-sky Isolated-star Searches Of Ligo and Virg...mentioning

confidence: 90%

Searches for continuous-wave gravitational radiation

Riles

2023

Living Rev Relativ

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“…Since one operates at a limited computing budget, this results in a lower sensitivity. We have not considered (Singh & Papa 2023), which presents the most stringent upper limits for continuous waves from binary systems, but with orbital parameters unlikely to pertain to recycled neutron stars. Since our synthetic signals contain no information on binary parameters, for any search considered, we count as detectable any signal whose amplitude lays above the most sensitive upper limit set at the signal's frequency, independently of ḟ and orbital parameters.…”

Section: Recycled Neutron Starsmentioning

confidence: 99%

Continuous gravitational waves from Galactic neutron stars: demography, detectability and prospects

Gianluca¹,

Papa²,

Jiang³

et al. 2023

Preprint

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We study the prospects for detection of continuous gravitational signals from "normal" Galactic neutron stars. We use a synthetic population generated by evolving stellar remnants in time, according to several models. We also briefly treat the case of recycled neutron stars. We consider the most recent constraints set by all-sky searches for continuous gravitational waves and use them for our detectability criteria. We discuss detection prospects for the current and the next generation of gravitational wave detectors. We find that neutron stars whose ellipticity is solely caused by magnetic deformations cannot produce any detectable signal, not even by 3rd-generation detectors. Currently detectable sources all have B < 10 12 G and show a strong correlation between magnetic field and ellipticity: the larger the magnetic field, the larger the ellipticity. According to our models, 3rd-generation detectors as the Einstein Telescope and Cosmic Explorer will be able to detect up to ≈ 250 more sources than the current detectors. Continuous waves from recycled neutron stars will likely remain elusive to detection by current detectors but should be detectable with the next generation of detectors.

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“…Because one operates within a limited computing budget, this results in a lower sensitivity. We have not considered Singh & Papa (2023), who searched orbital parameters that are unlikely to pertain to recycled neutron stars. We determine the detectability of isolated neutron stars and neutron stars in binaries separately.…”

Section: Recycled Neutron Starsmentioning

confidence: 99%

Continuous Gravitational Waves from Galactic Neutron Stars: Demography, Detectability, and Prospects

Gianluca¹,

Papa²,

Ming³

et al. 2023

ApJ

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We study the prospects for the detection of continuous gravitational signals from normal Galactic neutron stars, i.e., nonrecycled stars. We use a synthetic population generated by evolving stellar remnants in time, according to several models. We consider the most recent constraints set by all-sky searches for continuous gravitational waves and use them for our detectability criteria. We discuss the detection prospects for the current and the next generation of gravitational-wave detectors. We find that neutron stars whose ellipticity is solely caused by magnetic deformations cannot produce any detectable signal, not even by third-generation detectors. The currently detectable sources all have B ≲ 1012 G and deformations that are not solely due to the magnetic field. For these, we find in fact that the larger the magnetic field, the higher the ellipticity required for the signal to be detectable, and this ellipticity is well above the value induced by the magnetic field. Third-generation detectors such as the Einstein Telescope and Cosmic Explorer will be able to detect up to ≈250 more sources than current detectors. We briefly treat the case of recycled neutron stars with a simplified model. We find that continuous gravitational waves from these objects will likely remain elusive to detection by current detectors, but should be detectable with the next generation of detectors.

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Opportunistic Search for Continuous Gravitational Waves from Compact Objects in Long-period Binaries

Cited by 4 publications

References 24 publications

Searches for continuous-wave gravitational radiation

Searches for continuous-wave gravitational radiation

Continuous gravitational waves from Galactic neutron stars: demography, detectability and prospects

Continuous Gravitational Waves from Galactic Neutron Stars: Demography, Detectability, and Prospects

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