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Paper: Decoupling of Superfluid and Normal Oscillation Modes in Rotating Neutron Stars
Volume: 466, Electromagnetic Radiation from Pulsars and Magnetars
Page: 211
Authors: Kantor, E. M.; Gusakov, M. E.
Abstract: It was shown in Gusakov & Kantor (2011) that equations governing oscillations of superfluid neutron stars can be split into two systems of weakly coupled equations, one describing the superfluid modes and another one, the normal modes. Here we demonstrate that similar decoupling of modes also occurs in rotating NSs. To this aim we formulated the relativistic hydrodynamics of superfluid mixtures allowing for vortices. Our results indicate, in particular, that emission of gravitational waves from superfluid oscillation modes is suppressed in comparison to that from normal modes. The proposed approach allows one to drastically simplify modeling of oscillations of superfluid rotating neutron stars.
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