Evidence for a minimum ellipticity in millisecond pulsars
Evidence for a minimum ellipticity in millisecond pulsars
Neutron stars spin down over time due to a number of energy-loss processes. We provide tantalizing population-based evidence that millisecond pulsars (MSPs) have a minimum ellipticity of epsilon ≈ 10−9 around their spin axis and that, consequently, some spin down mostly through gravitational-wave emission. We discuss the implications of such a minimum ellipticity in terms of the internal magnetic field strengths and nuclear matter composition of neutron stars and show it would result in the Advanced LIGO and Virgo gravitational-wave detectors, or their upgrades, detecting gravitational waves from some known MSPs in the near future.
astro-ph.HE, gr-qc
1-6
Woan, G.
6315a80a-3dd2-411b-9c3a-c038d7751cf4
Pitkin, M.D.
8b8d28fa-ca26-477f-836b-634ea4e496c0
Haskell, B.
50268ffe-7d41-45ac-b4a3-fb44dea97b35
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160
Lasky, P.D.
8dc1837b-9b1f-475f-a7ad-407b8f795cce
21 August 2018
Woan, G.
6315a80a-3dd2-411b-9c3a-c038d7751cf4
Pitkin, M.D.
8b8d28fa-ca26-477f-836b-634ea4e496c0
Haskell, B.
50268ffe-7d41-45ac-b4a3-fb44dea97b35
Jones, D.I.
b8f3e32c-d537-445a-a1e4-7436f472e160
Lasky, P.D.
8dc1837b-9b1f-475f-a7ad-407b8f795cce
Woan, G., Pitkin, M.D., Haskell, B., Jones, D.I. and Lasky, P.D.
(2018)
Evidence for a minimum ellipticity in millisecond pulsars.
The Astrophysical Journal Letters, 863 (2), .
(doi:10.3847/2041-8213/aad86a).
Abstract
Neutron stars spin down over time due to a number of energy-loss processes. We provide tantalizing population-based evidence that millisecond pulsars (MSPs) have a minimum ellipticity of epsilon ≈ 10−9 around their spin axis and that, consequently, some spin down mostly through gravitational-wave emission. We discuss the implications of such a minimum ellipticity in terms of the internal magnetic field strengths and nuclear matter composition of neutron stars and show it would result in the Advanced LIGO and Virgo gravitational-wave detectors, or their upgrades, detecting gravitational waves from some known MSPs in the near future.
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Accepted/In Press date: 7 June 2018
e-pub ahead of print date: 7 June 2018
Published date: 21 August 2018
Keywords:
astro-ph.HE, gr-qc
Identifiers
Local EPrints ID: 423786
URI: http://eprints.soton.ac.uk/id/eprint/423786
ISSN: 2041-8205
PURE UUID: 22eb5bfa-a0c7-4901-aa92-c46e1a2550c0
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Date deposited: 01 Oct 2018 16:30
Last modified: 16 Mar 2024 03:06
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Contributors
Author:
G. Woan
Author:
M.D. Pitkin
Author:
B. Haskell
Author:
P.D. Lasky
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