Nonradial g-mode oscillations of warm neutron stars

Details Nonradial g-mode oscillations of warm neutron stars Nonradial g-mode oscillations of warm neutron stars

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...268..837m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 268, May 15, 1983, p. 837-848.

Astronomy and Astrophysics

Astrophysics

68

Hot Stars, Neutron Stars, Relativistic Theory, Stellar Models, Stellar Oscillations, Stellar Temperature, Adiabatic Equations, Approximation, Eigenvalues, Gravitational Waves, Neutrinos, Quadrupoles, Vibration Damping, Vibration Mode, Wave Dispersion

Scientific paper

The adiabatic l =1 and 2 p, f, and g-mode oscillations of a numer of finite temperature neutron star models from the evolutionary sequences constructed by Richardson (1980) are compared. The general relativistic theory of spheroidal nonradial stellar oscillations is briefly reviewed, and an approximation termed the 'relativistic Cowling approximation' is introduced in analogy with its Newtonian counterpart. The resulting pulsation equations are solved in the limit of high spatial frequencies to obtain the local dispersion relation and to provide estimates of the periods of the p and g-mode oscillations. The numerical solutions of the full eigenvalue problem, still in Cowling approximation, are described. Calculations of p and f-mode periods, although the Cowling approximation is less satisfactory for these than for the g-modes, are included. The damping due to gravitational radiation for all modes, and due to neutrino emission for some of the modes, is estimated.

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