The effects of Galactic model uncertainties on LISA observations of double neutron stars
Storck, Anatole and Church, Ross P. LU
(2023)
In Monthly Notices of the Royal Astronomical Society
521(2).
p.2368-2377
- Abstract
Observations of binaries containing pairs of neutron stars using the upcoming space-based gravitational wave observatory, LISA, have the potential to improve our understanding of neutron star physics and binary evolution. In this work, we assess the effect of changing the model of the Milky Way’s kinematics and star formation history on predictions of the population of double neutron stars that will be detected and resolved by LISA. We conclude that the spatial distribution of these binaries is insensitive to the choice of Galactic models, compared to the stochastic variation induced by the small sample size. In particular, the time-consuming computation of the binaries’ Galactic orbits is not necessary. The distributions of... (More)
Observations of binaries containing pairs of neutron stars using the upcoming space-based gravitational wave observatory, LISA, have the potential to improve our understanding of neutron star physics and binary evolution. In this work, we assess the effect of changing the model of the Milky Way’s kinematics and star formation history on predictions of the population of double neutron stars that will be detected and resolved by LISA. We conclude that the spatial distribution of these binaries is insensitive to the choice of Galactic models, compared to the stochastic variation induced by the small sample size. In particular, the time-consuming computation of the binaries’ Galactic orbits is not necessary. The distributions of eccentricity and gravitational-wave frequency are, however, affected by the choice of star formation history. Binaries with eccentricities e > 0.1, which can be measured by LISA observations, are mostly younger than 100 Myr. We caution that comparisons between different predictions for LISA observations need to use consistent star formation histories, and that the Galactic star formation history should be taken into account in the analysis of the observations themselves. The lack of strong dependence on Galactic models means that LISA detection of double neutron star binaries may provide a relatively clean probe of massive binary star evolution.
(Less)
- author
- Storck, Anatole
and Church, Ross P.
LU
- organization
- publishing date
- 2023-05-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Galaxy: structure, gravitational waves, instrumentation: detectors, stars: neutron
- in
- Monthly Notices of the Royal Astronomical Society
- volume
- 521
- issue
- 2
- pages
- 10 pages
- publisher
- Oxford University Press
- external identifiers
-
- scopus:85161600833
- ISSN
- 0035-8711
- DOI
- 10.1093/mnras/stad663
- language
- English
- LU publication?
- yes
- id
- 27785421-d67a-4e77-bddb-a4d3d8f3fb15
- date added to LUP
- 2023-08-21 13:14:32
- date last changed
- 2023-08-21 13:14:32
@article{27785421-d67a-4e77-bddb-a4d3d8f3fb15,
abstract = {{<p>Observations of binaries containing pairs of neutron stars using the upcoming space-based gravitational wave observatory, LISA, have the potential to improve our understanding of neutron star physics and binary evolution. In this work, we assess the effect of changing the model of the Milky Way’s kinematics and star formation history on predictions of the population of double neutron stars that will be detected and resolved by LISA. We conclude that the spatial distribution of these binaries is insensitive to the choice of Galactic models, compared to the stochastic variation induced by the small sample size. In particular, the time-consuming computation of the binaries’ Galactic orbits is not necessary. The distributions of eccentricity and gravitational-wave frequency are, however, affected by the choice of star formation history. Binaries with eccentricities e > 0.1, which can be measured by LISA observations, are mostly younger than 100 Myr. We caution that comparisons between different predictions for LISA observations need to use consistent star formation histories, and that the Galactic star formation history should be taken into account in the analysis of the observations themselves. The lack of strong dependence on Galactic models means that LISA detection of double neutron star binaries may provide a relatively clean probe of massive binary star evolution.</p>}},
author = {{Storck, Anatole and Church, Ross P.}},
issn = {{0035-8711}},
keywords = {{Galaxy: structure; gravitational waves; instrumentation: detectors; stars: neutron}},
language = {{eng}},
month = {{05}},
number = {{2}},
pages = {{2368--2377}},
publisher = {{Oxford University Press}},
series = {{Monthly Notices of the Royal Astronomical Society}},
title = {{The effects of Galactic model uncertainties on LISA observations of double neutron stars}},
url = {{http://dx.doi.org/10.1093/mnras/stad663}},
doi = {{10.1093/mnras/stad663}},
volume = {{521}},
year = {{2023}},
}