Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
1999-08-12
Phys.Rev. D60 (1999) 104025
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
31 pages, RevTex, 17 figures
Scientific paper
10.1103/PhysRevD.60.104025
We develop a general formalism to treat, in general relativity, the linear oscillations of a two-fluid star about static (non-rotating) configurations. Such a formalism is intended for neutron stars, whose matter content can be described, as a first approximation, by a two-fluid model: one fluid is the neutron superfluid, which is believed to exist in the core and inner crust of mature neutron stars; the other fluid is a conglomerate of all other constituents (crust nuclei, protons, electrons, etc...). We obtain a system of equations which govern the perturbations both of the metric and of the matter variables, whatever the equation of state for the two fluids. As a first application, we consider the simplified case of two non-interacting fluids, each with a polytropic equation of state. We compute numerically the quasi-normal modes (i.e. oscillations with purely outgoing gravitational radiation) of the corresponding system. When the adiabatic indices of the two fluids are different, we observe a splitting for each frequency of the analogous single fluid spectrum. The analysis also substantiates the claim that w-modes are largely due to spacetime oscillations.
Comer G. L.
Langlois David
Lin Lap Ming
No associations
LandOfFree
Quasi-Normal Modes of General Relativistic Superfluid Neutron Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quasi-Normal Modes of General Relativistic Superfluid Neutron Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quasi-Normal Modes of General Relativistic Superfluid Neutron Stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-662838