2001/05/07 by D. A. Baiko, P. Haensel, D. G. Yakovlev · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Neutron #Neutron star #Neutron temperature #Proton #Pulsars and Gravitational Waves Research #Statistical Mechanics and Entropy #Superfluidity #Thermal #Thermal conductivity #astro-ph
paper · pdf · doi:10.1051/0004-6361:20010621
published as A&A, 374 (2001) 151 · 13 pages, 4 figures, accepted to AA
arxiv created 2001/05/07 · openalex publication_date 2001/07/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The diffusive thermal conductivity of neutrons in dense matter [ g cm-3] of neutron star cores is calculated. The contribution from neutron-neutron and neutron-proton collisions is taken into account. We use the transition probabilities calculated for symmetric dense nucleon matter on the basis of the Dirac-Brueckner approach to the in-medium effects and the Bonn model of bare nucleon-nucleon interaction. The diffusive thermal conductivity of neutrons in the presence of neutron and proton superfluidities is analyzed in a microscopic manner; the effects of superfluidity are shown to be significant. The low temperature behavior of the thermal conductivity appears to be extremely sensitive to the relation between critical temperatures of neutrons and protons. The results are fitted by simple analytic expressions. In combination with the formulae for the electron and muon thermal conductivities, obtained earlier, the present expressions provide a realistic description of the full diffusive thermal conductivity in the neutron star cores for normal and various superfluid phases.