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- W2235822900 abstract "In the present paper we examine gravitational wave asteroseismology relations for f-modes of rapidly rotating neutron stars. An approach different to the previous studies is employed - first, the moment of inertia is used instead of the stellar radius, and second, the normalization of the oscillation frequencies and damping times is different. It was shown that in the non-rotating case this can lead to a much stronger equation of state independence and our goal is to generalize the static relations to the rapidly rotating case and values of the spherical mode number $lge2$. We employ realistic equations of state that cover a very large range of stiffness in order to check better the universality of the relations. At the end we explore the inverse problem, i.e. obtain the neutron star parameters from the observed gravitational frequencies and damping times. It turns out that with this new set of relations we can solve the inverse problem with a very good accuracy using three frequencies that was not possible in the previous studies where one needs also the damping times. The asteroseismology relations are also particularly good for the massive rapidly rotating models that are subject to secular instabilities." @default.
- W2235822900 created "2016-06-24" @default.
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- W2235822900 date "2015-12-02" @default.
- W2235822900 modified "2023-09-23" @default.
- W2235822900 title "Asteroseismology of rapidly rotating neutron stars: An alternative approach" @default.
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- W2235822900 doi "https://doi.org/10.1103/physrevd.92.124004" @default.
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