scholarly journals Fundamental oscillation modes of neutron stars: Validity of universal relations

2015 ◽  
Vol 91 (4) ◽  
Author(s):  
Cecilia Chirenti ◽  
Gibran H. de Souza ◽  
Wolfgang Kastaun
Keyword(s):  
Neutron Stars ◽  
Oscillation Modes ◽  
Fundamental Oscillation

scholarly journals NEUTRON STAR MATTER EQUATION OF STATE AND GRAVITATIONAL WAVE EMISSION

2005 ◽  
Vol 20 (31) ◽  
pp. 2335-2349 ◽  
Author(s):  
OMAR BENHAR
Keyword(s):  
Experimental Study ◽  
Neutron Star ◽  
Equation Of State ◽  
Neutron Stars ◽  
Gravitational Waves ◽  
Neutron Star Matter ◽  
Oscillation Modes ◽  
Nonradial Oscillation ◽  
Macroscopic Objects ◽  
Wave Emission

The EOS of strongly interacting matter at densities ten to fifteen orders of magnitude larger than the typical density of terrestrial macroscopic objects determines a number of neutron star properties, including the pattern of gravitational waves emitted following the excitation of nonradial oscillation modes. This paper reviews some of the approaches employed to model neutron star matter, as well as the prospects for obtaining new insights from the experimental study of gravitational waves emitted by neutron stars.

scholarly journals Gravitational-Wave Asteroseismology as a Tool to Reveal the Equation of State of Relativistic Neutron Stars

2002 ◽  
Vol 185 ◽  
pp. 612-615
Author(s):  
Johannes Ruoff
Keyword(s):  
Neutron Star ◽  
Equation Of State ◽  
Neutron Stars ◽  
Gravitational Wave ◽  
Gravitational Waves ◽  
Oscillation Modes

AbstractThe equation of state (EOS) is still the big unknown in the physics of neutron stars. An accurate measurement of both the mass and the radius of a neutron star would put severe constraints on the range of possible EOSs. I discuss how the parameters of the oscillation modes of a neutron star, measured from the emitted gravitational waves, can in principle be used to infer its mass and radius, and thus reveal its EOS.

scholarly journals Continuous Gravitational Waves from Neutron Stars: Current Status and Prospects

Universe ◽  
2019 ◽  
Vol 5 (11) ◽  
pp. 217 ◽  
Author(s):  
Magdalena Sieniawska ◽  
Michał Bejger
Keyword(s):  
Neutron Stars ◽  
Gravitational Waves ◽  
Gravitational Radiation ◽  
Elastic Strain ◽  
Electromagnetic Waves ◽  
Current Status ◽  
Free Precession ◽  
Oscillation Modes ◽  
Unstable Oscillation ◽  
The Universe

Gravitational waves astronomy allows us to study objects and events invisible in electromagnetic waves. It is crucial to validate the theories and models of the most mysterious and extreme matter in the Universe: the neutron stars. In addition to inspirals and mergers of neutrons stars, there are currently a few proposed mechanisms that can trigger radiation of long-lasting gravitational radiation from neutron stars, such as e.g., elastically and/or magnetically driven deformations: mountains on the stellar surface supported by the elastic strain or magnetic field, free precession, or unstable oscillation modes (e.g., the r-modes). The astrophysical motivation for continuous gravitational waves searches, current LIGO and Virgo strategies of data analysis and prospects are reviewed in this work.

scholarly journals Fundamental oscillation modes of self-interacting bosonic dark stars

2019 ◽  
Vol 2019 (06) ◽  
pp. 051-051 ◽  
Author(s):  
C. Vásquez Flores ◽  
Alessandro Parisi ◽  
Chian-Shu Chen ◽  
Germán Lugones
Keyword(s):  
Oscillation Modes ◽  
Fundamental Oscillation

scholarly journals Non-radial oscillation modes as a probe of density discontinuities in neutron stars

2003 ◽  
Vol 338 (2) ◽  
pp. 389-400 ◽  
Author(s):  
G. Miniutti ◽  
J. A. Pons ◽  
E. Berti ◽  
L. Gualtieri ◽  
V. Ferrari
Keyword(s):  
Neutron Stars ◽  
Radial Oscillation ◽  
Oscillation Modes

scholarly journals Kilohertz QPOs in low-mass X-ray binaries as oscillation modes of tori around neutron stars – I

2017 ◽  
Vol 474 (3) ◽  
pp. 3967-3975 ◽  
Author(s):  
Marcio G B de Avellar ◽  
Oliver Porth ◽  
Ziri Younsi ◽  
Luciano Rezzolla
Keyword(s):  
Neutron Stars ◽  
X Ray ◽  
Oscillation Modes ◽  
Low Mass ◽  
X Ray Binaries

scholarly journals Effects of Superfluidity on Spheroidal Oscillations of Neutron Stars

1994 ◽  
Vol 147 ◽  
pp. 586-590
Author(s):  
Umin Lee ◽  
T.J.B. Collins ◽  
H.M. Van Horn ◽  
R.I. Epstein
Keyword(s):  
Wave Propagation ◽  
Neutron Star ◽  
Neutron Stars ◽  
Short Wavelength ◽  
Surface Gravity ◽  
Frequency Spectra ◽  
Global Oscillation ◽  
Oscillation Modes ◽  
Outer Crust ◽  
Spheroidal Oscillations

AbstractIn the limit of short wavelengths, it has been shown that superfluidity significantly affects wave propagation in neutron stars. Here we abandon the short-wavelength restriction and extend these calculations to global oscillation modes. In the present analysis, the solid crust of the neutron star is divided into an outer crust and an inner crust, and a superfluid of neutrons coexists with the solid lattice in the inner crust. We have computed several low-order global spheroidal modes for l = 2 both with and without superfluidity. We find that superfluidity in the inner crust affects the frequency spectra of acoustic (p-) modes, shear (s-) modes, and interfacial (i-) modes, although the surface gravity (g-) modes are not affected at all.

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