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Cooling timescale for protoneutron stars and properties of nuclear matter: Effective mass and symmetry energy at high densities

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arxiv 1905.00014 v1 pith:FDD3CB2H submitted 2019-04-30 astro-ph.HE nucl-th

classification astro-ph.HEnucl-th
keywords effectivecoolingmassprotoneutronstarsymmetrydensitiesenergy
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The cooling process of a protoneutron star is investigated with focus on its sensitivity to properties of hot and dense matter. An equation of state, which includes the nucleon effective mass and nuclear symmetry energy at twice the saturation density as control parameters, is constructed for systematic studies. The numerical code utilized in this study follows a quasi-static evolution of a protoneutron star solving the general-relativistic stellar structure with neutrino diffusion. The cooling timescale evaluated from the neutrino light curve is found to be longer for the models with larger effective masses and smaller symmetry energies at high densities. The present results are compared with those for other equations of state and it is found that they are consistent in terms of their dependences on the effective mass and neutron star radius.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Influence of effective mass of the relativistic mean field theory on core collapse supernovae and compact objects

    astro-ph.HE 2026-08 conditional novelty 6.0 of 10

    In relativistic mean field theory, a larger effective nucleon mass softens the supernova equation of state, yielding more compact proto-neutron stars, earlier black hole collapse, and higher-energy neutrino emission.

  2. On the Nucleon Effective Mass in Neutron Stars Cooling

    hep-th 2026-07 conditional novelty 6.0 of 10

    Using the Landau instead of the Dirac effective nucleon mass in neutron-star cooling calculations cools massive stars faster, changing predicted surface temperatures by ~0.03–0.06 dex.

  3. Constraints on maximum neutron star mass from proto-neutron star evolution

    nucl-th 2025-05 conditional novelty 5.0 of 10

    Hyperonic neutron stars are inferred to cap at roughly 2.15 to 2.2 solar masses, while stars above 2.2 solar masses should have purely nucleonic cores.

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