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The search for Continuous Gravitational Waves: the journey to discovery

Published online by Cambridge University Press:  27 February 2023

Paola Leaci Open the ORCID record for Paola Leaci [Opens in a new window]
Paola Leaci*
Affiliation:
Dip. di Fisica, Università di Roma “Sapienza” and INFN Sezione di Roma P.le A. Moro 2, I-00185 Rome, Italy email: [email protected]
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Abstract

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Continuous gravitational Waves (CWs) are a very promising, not yet detected, and interesting class of persistent and semi-periodic signals. They are emitted mainly by rapidly rotating asymmetric neutron stars, with frequencies that are well covered by the [10-3 000] Hz range of the advanced LIGO-Virgo detectors. Due to the expected small degree of asymmetry of a neutron star, the search for this kind of signals is extremely challenging, and can be very computationally expensive when the source parameters are not known or not well constrained. CW detection from a spinning neutron star will allow us to characterize its structure and properties, making this source an unparalleled laboratory for studying several key issues in fundamental physics and relativistic astrophysics, in conditions that cannot be reproduced on Earth. The most recent methodologies used in CW searches will be discussed, and the latest results from the third advanced LIGO-Virgo observational run will be presented. A summary of future prospects to feasibly detect such feeble signals as the detector performance improves, and ever-more-sensitive and robust data-analysis algorithms are implemented, will be also outlined.

Keywords

gravitational wavesinterferometersdata analysisneutron starsblack hole physicsdetectors
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 16 , Symposium S363: Neutron Star Astrophysics at the Crossroads: Magnetars and the Multimessenger Revolution , June 2020 , pp. 1 - 9
Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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