Non-adiabatic analysis of low-frequency oscillations of uniformly rotating stars
نویسندگان
چکیده
منابع مشابه
Adiabatic oscillations of non–rotating superfluid neutron stars
We present results concerning the linear (radial and non–radial) oscillations of non–rotating superfluid neutron stars in Newtonian physics. We use a simple two–fluid model to describe the superfluid neutron star, where one fluid consists of the superfluid neutrons, while the second fluid contains all the comoving constituents (protons, electrons). The two fluids are assumed to be “free” in the...
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We study the fully non-adiabatic tidal response of a uniformly rotating unevolved 20M ⊙ star to the dominant l = m = 2 component of the companion's perturbing potential. This is done numerically with a 2D implicit finite difference scheme. We assume the star is rotating slowly with angular speed Ω s ≪ Ω c , so that the centrifugal force can be neglected, but the Coriolis force is taken fully in...
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Aims. We calculate Keplerian (mass shedding) configurations of rigidly rotating neutron stars and quark stars with crusts. We check the validity of empirical formula for Keplerian frequency, fK, proposed by Lattimer & Prakash, fK(M) = C (M/M⊙) (R/10 km) , where M is the (gravitational) mass of Keplerian configuration, R is the (circumferential) radius of the non-rotating configuration of the sa...
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We study low-amplitude crustal oscillations of slowly rotating relativistic stars consisting of a central fluid core and an outer thin solid crust. We estimate the effect of rotation on the torsional toroidal modes and on the interfacial and shear spheroidal modes. The results compared against the Newtonian ones for wide range of neutron star models and equations of state.
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Context. With the launch of space missions devoted to asteroseismology (like COROT), the scientific community will soon have accurate measurements of pulsation frequencies in many rapidly rotating stars. Aims. The present work focuses on the effects of rotation on pulsations of rapidly rotating stars when both the Coriolis and centrifugal accelerations require a non-perturbative treatment. Meth...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1987
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/225.3.643