Modelling neutron star mountains

@article{Gittins2020ModellingNS,
  title={Modelling neutron star mountains},
  author={Fabian Gittins and Nils Andersson and D. I. Jones},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2020},
  volume={500},
  pages={5570-5582}
}
As the era of gravitational-wave astronomy has well and truly begun, gravitational radiation from rotating neutron stars remains elusive. Rapidly spinning neutron stars are the main targets for continuous-wave searches since, according to general relativity, provided they are asymmetrically deformed, they will emit gravitational waves. It is believed that detecting such radiation will unlock the answer to why no pulsars have been observed to spin close to the break-up frequency. We review… Expand

Figures and Tables from this paper

Deep exploration for continuous gravitational waves at 171–172 Hz in LIGO second observing run data
We pursue a novel strategy toward a first detection of continuous gravitational waves from rapidly rotating deformed neutron stars. Computational power is focused on a narrow region of signalExpand
Diving below the Spin-down Limit: Constraints on Gravitational Waves from the Energetic Young Pulsar PSR J0537-6910
We present a search for quasi-monochromatic gravitational-wave signals from the young, energetic X-ray pulsar PSR J0537−6910 using data from the second and third observing runs of LIGO and Virgo. TheExpand
Gravitational waves from mountains in newly born millisecond magnetars
In this paper we study the spin-evolution and gravitational-wave luminosity of a newly born millisecond magnetar, formed either after the collapse of a massive star or after the merger of two neutronExpand
Modeling the Galactic Neutron Star Population for Use in Continuous Gravitational-wave Searches
Searches for continuous gravitational waves (GW) from unknown Galactic neutron stars provide limits on the shapes of neutron stars. A rotating neutron star will produce GW if asymmetric deformationsExpand
Modelling neutron star mountains in relativity
Rapidly spinning, deformed neutron stars have long been considered potential gravitational-wave emitters. However, so far only upper limits on the size of the involved quadrupole deformations haveExpand
Search for continuous gravitational waves from small-ellipticity sources at low frequencies
We present the results of an all-sky search for continuous gravitational wave signals with frequencies in the 20-500 Hz range from neutron stars with ellipticity of ≈ 10−8. This frequency region isExpand
Dynamical tides in neutron stars: the impact of the crust
We consider the dynamical tidal response of a neutron star in an inspiralling binary, focussing on the impact of the star's elastic crust. Within the context of Newtonian gravity, we add the elasticExpand
Results from high-frequency all-sky search for continuous gravitational waves from small-ellipticity sources
We present the results of an all-sky search for continuous gravitational wave signals with frequencies in the 1700-2000 Hz range from neutron stars with ellipticity of 1e-8. The search employs theExpand

References

SHOWING 1-10 OF 76 REFERENCES
Gravitational-wave Constraints on the Equatorial Ellipticity of Millisecond Pulsars
We present a search for continuous gravitational waves from five radio pulsars, comprising three recycled pulsars (PSR J0437-4715, PSR J0711-6830, and PSR J0737-3039A) and two young pulsars: the CrabExpand
The Mechanics of Constitutive Modeling
Constitutive modeling is the most intensive research field within solid mechanics. This work offers a comprehensive, parallel treatment of constitutive models and appropriate numerical solutionExpand
Breaking strain of neutron star crust and gravitational waves.
TLDR
Because of the collective behavior of the ions during failure found in the simulations, the neutron star crust is likely very strong and can support mountains large enough so that their gravitational wave radiation could limit the spin periods of some stars and might be detectable in large-scale interferometers. Expand
Maximum elastic deformations of relativistic stars
We present a method for calculating the maximum elastic quadrupolar deformations of relativistic stars, generalizing the previous Newtonian, Cowling approximation integral given by [G. Ushomirsky etExpand
A unified equation of state of dense matter and neutron star structure
An equation of state (EOS) of neutron star matter, describing both the neutron star crust and the liquid core, is calculated. It is based on the eective nuclear interaction SLy of the Skyrme type,Expand
Mountains on neutron stars: accreted versus non-accreted crusts
The aim of this paper is to compare the two cases of an isolated neutron star, with a non-accreted crust, and that of an accreting neutron star, with an accreted crust, and try to estimate which oneExpand
  • ApJ
  • 2020
Asymmetric accretion and thermal ‘mountains’ in magnetized neutron star crusts
Accreting neutron stars are one of the main targets for continuous gravitational wave searches, as asymmetric accretion may lead to quadrupolar deformations, or `mountains', on the crust of the star,Expand
Beating the spin-down limit on gravitational wave emission from the crab pulsar
We discovered three successive Moreton waves generated by a single solar flare on 2005 August 3. Although this flare was not special in magnitude or configuration, Moreton waves (shock waves)Expand
GW190425: Observation of a Compact Binary Coalescence with Total Mass ∼ 3.4 M ⊙
On 2019 April 25, the LIGO Livingston detector observed a compact binary coalescence with signal-to-noise ratio 12.9. The Virgo detector was also taking data that did not contribute to detection dueExpand
...
1
2
3
4
5
...