Determining the equation of state of neutron stars with Einstein Telescope using tidal effects and r-mode excitations from a population of binary inspirals

Third-generation gravitational wave (GW) observatories such as Einstein Telescope (ET) and Cosmic Explorer (CE) will be ideal instruments to probe the structure of neutron stars through the GWs they emit when undergoing binary coalescence. In this work we make predictions about how well ET in partic...

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Bibliographic Details
Published inarXiv.org
Main Authors Gupta, Pawan Kumar, Puecher, Anna, Pang, Peter T H, Janquart, Justin, Koekoek, Gideon, Van Den Broeck, Chris
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 02.05.2022
Subjects
Astronomical instruments
Binary stars
Coalescing
Equations of state
Gravitational waves
Neutron stars
Neutrons
Observatories
Tidal effects
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Summary:Third-generation gravitational wave (GW) observatories such as Einstein Telescope (ET) and Cosmic Explorer (CE) will be ideal instruments to probe the structure of neutron stars through the GWs they emit when undergoing binary coalescence. In this work we make predictions about how well ET in particular will enable us to reconstruct the neutron star equation of state through observations of tens of binary neutron star coalescences with signal-to-noise ratios in the hundreds. We restrict ourselves to information that can be extracted from the inspiral, which includes tidal effects and possibly r-mode resonances. In treating the latter we go beyond the Newtonian approximation, introducing and utilizing new universal relations. We find that the ability to observe resonant r-modes would have a noticeable impact on neutron star equation of state measurements with ET.
ISSN:2331-8422