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Numerical Study of Stellar Core Collapse and Neutrino Emission Using the Nuclear Equation of State Obtained by the Variational Method

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arxiv 2103.14386 v1 pith:UAQM7Q3L submitted 2021-03-26 astro-ph.HE nucl-th

Numerical Study of Stellar Core Collapse and Neutrino Emission Using the Nuclear Equation of State Obtained by the Variational Method

Ken'ichiro Nakazato , Kohsuke Sumiyoshi , Hajime Togashi This is my paper
classification astro-ph.HE nucl-th
keywords collapseodotstellarvariationalcore-collapseemissionequationneutrino
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Core-collapse simulations of massive stars are performed using the equation of state (EOS) based on the microscopic variational calculation with realistic nuclear forces. The progenitor models with the initial masses of $15M_\odot$, $9.6M_\odot$, and $30M_\odot$ are adopted as examples of the ordinary core-collapse supernova with a shock stall, the low-mass supernova with a successful explosion, and the black hole formation, respectively. Moreover, the neutrinos emitted from the stellar collapse are assessed. Then, the variational EOS is confirmed to work well in all cases. The EOS dependences of the dynamics, thermal structure, and neutrino emission of the stellar collapse are also investigated.

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    Paleodetectors can reach burst-like Galactic core-collapse activity of several tens of supernovae at 10 pc, with sensitivity enhanced by high-mass NS and failed-SN neutrino emission that depends on the nuclear EOS.