Quick search Find article
Quick search
Find article

Oscillations and instabilities of fast rotating neutron stars

Erich Gaertig1,2 and Kostas D Kokkotas1,3

Show affiliations


We present our results of our study of the oscillations and instabilities of rapidly rotating relativistic stars in the Cowling approximation. This is the first study of its kind and provides information on the effect of fast rotation on the oscillation spectra while it offers the possibility in studying the complete problem by including spacetime perturbations. Our study includes both axisymmetric and non-axisymmetric perturbations and provides limits for the onset of the secular bar mode rotational instability. We also present approximate formulae for the dependence of the oscillation spectrum from rotation. The results suggest that it is possible to extract the relativistic star's parameters from the observed gravitational wave spectrum.


PACS

97.60.Jd Neutron stars

04.30.-w Gravitational waves

95.30.Sf Relativity and gravitation

04.40.Dg Relativistic stars: structure, stability, and oscillations

97.10.Kc Stellar rotation

97.10.Sj Pulsations, oscillations, and stellar seismology

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 1 (2009)



  1. Oscillations and instabilities of fast rotating neutron stars

    Erich Gaertig and Kostas D Kokkotas 2009 J. Phys.: Conf. Ser. 189 012016

  2. Variable dampers for earthquake protection of benchmark highway bridges

    S N Madhekar and R S Jangid 2009 Smart Mater. Struct. 18 115011

  3. Axonal guidance on patterned free-standing nanowire surfaces

    Christelle Prinz et al 2008 Nanotechnology 19 345101

  4. Stress-corrosion mechanisms in silicate glasses

    Matteo Ciccotti 2009 J. Phys. D: Appl. Phys. 42 214006

  5. EXAFS analysis of a human Cu,Zn SOD isoform focused using non-denaturing gel electrophoresis

    Sylviane Chevreux et al 2009 J. Phys.: Conf. Ser. 190 012205

  6. Fault diagnosis of rotating machinery using an improved HHT based on EEMD and sensitive IMFs

    Yaguo Lei and Ming J Zuo 2009 Meas. Sci. Technol. 20 125701

  7. Structure of the electrochemically deposited Cu nanoclusters on p-GaAs(100) surface in H2SO4 solution: X-ray absorption analysis

    Victoria L Mazalova et al 2009 J. Phys.: Conf. Ser. 190 012127

  8. On the possibility of a trans-Planckian duality

    Stefano Bolognesi 2009 Class. Quantum Grav. 26 225001

  9. Photonic control of flexible structures—application to a free-floating parabolic membrane shell

    Hui-Ru Shih et al 2009 Smart Mater. Struct. 18 115019

  10. The separability of tripartite Gaussian states with amplification and amplitude damping

    Xiao-Yu Chen 2008 J. Phys. A: Math. Theor. 41 155301

View by subject




Export






Please login to access our web services, or create an account if you don't yet have one.

You must have cookies enabled in your web browser to be able to login.

Username
Password

Forgotten your password? Get a new one here.