Results from high-frequency all-sky search for continuous gravitational waves from small-ellipticity sources. (arXiv:2012.04232v2 [gr-qc] UPDATED)
<a href="http://arxiv.org/find/gr-qc/1/au:+Dergachev_V/0/1/0/all/0/1">Vladimir Dergachev</a>, <a href="http://arxiv.org/find/gr-qc/1/au:+Papa_M/0/1/0/all/0/1">Maria Alessandra Papa</a>
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.
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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