Neutron Star - White Dwarf Binaries: Probing Formation Pathways and Natal Kicks with LISA

Fuente: arXiv
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Autori principali: Korol, Valeriya, Igoshev, Andrei P., Toonen, Silvia, Karnesis, Nikolaos, Moore, Christopher J., Finch, Eliot, Klein, Antoine
Natura: Preprint
Pubblicazione: 2023
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author Korol, Valeriya
Igoshev, Andrei P.
Toonen, Silvia
Karnesis, Nikolaos
Moore, Christopher J.
Finch, Eliot
Klein, Antoine
author_facet Korol, Valeriya
Igoshev, Andrei P.
Toonen, Silvia
Karnesis, Nikolaos
Moore, Christopher J.
Finch, Eliot
Klein, Antoine
contents Neutron star-white dwarf (NS+WD) binaries offer a unique opportunity for studying NS-specific phenomena with gravitational waves. In this paper, we employ the binary population synthesis technique to study the Galactic population of NS+WDs with the future Laser Interferometer Space Antenna (LISA). We anticipate approximately $\mathcal{O}(10^2)$ detectable NS+WDs by LISA, encompassing both circular and eccentric binaries formed via different pathways. Despite the challenge of distinguishing NS+WDs from more prevalent double white dwarfs in the LISA data (especially at frequencies below 2 mHz), we show that their eccentricity and chirp mass distributions may provide avenues to explore the NS natal kicks and common envelope evolution. Additionally, we investigate the spatial distribution of detectable NS+WDs relative to the Galactic plane and discuss prospects for identifying electromagnetic counterparts at radio wavelengths. Our results emphasise LISA's capability to detect and characterise NS+WDs and to offer insights into the properties of the underlying population. Our conclusions carry significant implications for shaping LISA data analysis strategies and future data interpretation.
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id arxiv_https___arxiv_org_abs_2310_06559
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Neutron Star - White Dwarf Binaries: Probing Formation Pathways and Natal Kicks with LISA
Korol, Valeriya
Igoshev, Andrei P.
Toonen, Silvia
Karnesis, Nikolaos
Moore, Christopher J.
Finch, Eliot
Klein, Antoine
High Energy Astrophysical Phenomena
General Relativity and Quantum Cosmology
Neutron star-white dwarf (NS+WD) binaries offer a unique opportunity for studying NS-specific phenomena with gravitational waves. In this paper, we employ the binary population synthesis technique to study the Galactic population of NS+WDs with the future Laser Interferometer Space Antenna (LISA). We anticipate approximately $\mathcal{O}(10^2)$ detectable NS+WDs by LISA, encompassing both circular and eccentric binaries formed via different pathways. Despite the challenge of distinguishing NS+WDs from more prevalent double white dwarfs in the LISA data (especially at frequencies below 2 mHz), we show that their eccentricity and chirp mass distributions may provide avenues to explore the NS natal kicks and common envelope evolution. Additionally, we investigate the spatial distribution of detectable NS+WDs relative to the Galactic plane and discuss prospects for identifying electromagnetic counterparts at radio wavelengths. Our results emphasise LISA's capability to detect and characterise NS+WDs and to offer insights into the properties of the underlying population. Our conclusions carry significant implications for shaping LISA data analysis strategies and future data interpretation.
title Neutron Star - White Dwarf Binaries: Probing Formation Pathways and Natal Kicks with LISA
topic High Energy Astrophysical Phenomena
General Relativity and Quantum Cosmology
url https://arxiv.org/abs/2310.06559