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arXiv · 2012.04232

Results from high-frequency all-sky search for continuous gravitational waves from small-ellipticity sources

Vladimir Dergachev·Maria Alessandra Papa
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Abstract

We present the results of an all-sky search for continuous gravitational wave signals with frequencies in the 1700-2000 Hz range from neutron stars with ellipticity of 1e-8. The search employs the Falcon analysis pipeline [citation 5] on LIGO O2 public data. Our results improve by a factor greater than 5 over [citation 11]. This is a huge leap forward: it takes an entirely new generation of gravitational wave detectors to achieve a 10-fold sensitivity increase over the previous generation [citation 12]. Within the probed frequency range and aside from the detected outliers, we can exclude neutron stars with ellipticity of 1e-8 within 65 pc of Earth. We set upper limits on the gravitational wave amplitude that hold even for worst-case signal parameters. New outliers are found, some of which we are unable to associate with any instrumental cause. If any were associated with a rotating neutron star, this would likely be the fastest neutron star today.

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Vladimir Dergachev, Maria Alessandra Papa. 2020-12-08. Results from high-frequency all-sky search for continuous gravitational waves from small-ellipticity sources. https://doi.org/10.1103/physrevd.103.063019

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