Dispersion and decay of collective modes in neutron star cores
arXiv:1705.07357 · doi:10.1103/PhysRevC.96.025805
Abstract
We calculate the frequencies of collective modes of neutrons, protons and electrons in the outer core of neutron stars. The neutrons and protons are treated in a hydrodynamic approximation and the electrons are regarded as collisionless. The coupling of the nucleons to the electrons leads to Landau damping of the collective modes and to significant dispersion of the low-lying modes. We investigate the sensitivity of the mode frequencies to the strength of entrainment between neutrons and protons, which is not well characterized. The contribution of collective modes to the thermal conductivity is evaluated.
10 pages, 4 figures
References in corpus (6)
- Shear viscosity in neutron star cores
- Low-energy collective excitations in the neutron star inner crust
- Superfluid Heat Conduction and the Cooling of Magnetized Neutron Stars
- Entrainment parameters in cold superfluid neutron star core
- Electron-muon heat conduction in neutron star cores via the exchange of transverse plasmons
- Elementary excitations in homogeneous neutron star matter
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- Coupling between superfluid neutrons and superfluid protons in the elementary excitations of neutron star matter
- Superfluid density in disordered pasta phases in neutron star crusts
- Roton instabilities in the superfluid outer core of neutron stars
- On the screening condition in the core of neutron stars
- Surface energy of magnetized superconducting matter in the neutron star cores