Nonanalytic Relativistic r-Modes of Slowly Rotating Nonbarotropic Neutron Stars
TLDR
In this paper , the relativistic r-modes of slowly rotating nonbarotropic neutron stars are described by nonanalytic functions of stellar angular velocity, which makes the perturbation techniques, used so far in the r-mode theoretical studies, inapplicable.Abstract:
We show that the r-modes of slowly rotating nonbarotropic neutron stars are described by nonanalytic functions of stellar angular velocity, which makes the perturbation techniques, used so far in the r-mode theoretical studies, inapplicable. In contrast to those studies and in accordance with numerical calculations beyond the slow rotation approximation, the obtained r-mode spectrum is discrete, which resolves the continuous spectrum problem, lasting since 1997. Our findings imply that the relativistic r-modes in slowly rotating neutron stars dramatically differ from their Newtonian cousins, which may have important implications for the detectability of r-mode signatures in observations, in particular for the r-mode excitation efficiency during the neutron star inspirals.read more
Citations
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Formulating the r-mode Problem for Slowly Rotating Neutron Stars
Nils Andersson,Fabian Gittins +1 more
TL;DR: In this article , the authors revisited the problem of inertial r-modes in stratified stars, drawing on a more precise description of the composition stratification in a mature neutron star.
Journal ArticleDOI
Nonanalytic Relativistic r-Modes of Slowly Rotating Nonbarotropic Neutron Stars
TL;DR: In this paper , the relativistic r-modes of slowly rotating nonbarotropic neutron stars are described by nonanalytic functions of stellar angular velocity, which makes the perturbation techniques, used so far in the r-mode theoretical studies, inapplicable.
Journal ArticleDOI
The r-modes of slowly rotating, stratified neutron stars
Fabian Gittins,Nils Andersson +1 more
TL;DR: In this paper , the authors consider the behavior of the modes as the star gets close to barotropicity and find that all but the fundamental l = |m| perturbations change character and become generic inertial modes.
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