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Dispersion and decay of collective modes in neutron star cores
Stockholm University, Nordic Institute for Theoretical Physics (Nordita). University of Copenhagen, Denmark.
Number of Authors: 4
2017 (English)In: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 96, no 2, 025805Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2017. Vol. 96, no 2, 025805
Keyword [en]
Asymmetric nuclear matter, Equations of state of nuclear matter, High-energy-density plasmas, Nuclear astrophysics, Nuclear matter in neutron stars, Sound waves, Superfluidity, Transport properties, s-wave
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-147060DOI: 10.1103/PhysRevC.96.025805ISI: 000408200700008OAI: oai:DiVA.org:su-147060DiVA: diva2:1142617
Available from: 2017-09-19 Created: 2017-09-19 Last updated: 2017-09-19Bibliographically approved

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Pethick, Christopher J.
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