Abstract

We study the influence of hot and dense matter in core-collapse supernovae by adopting an up-to-date nuclear equation of state (EOS) based on the microscopic nuclear many-body frameworks. We explore effects of the EOS based on the Dirac–Brückner–Hartree–Fock theory through comparisons with those based on the variational method. We also examine effects of the differences in the composition of nuclei and nucleons by using the same EOS as the variational method but employing two different treatments in computations of nuclear abundances. We perform numerical simulations of core-collapse supernovae adopting the three EOSs. We also perform numerical simulations of the long-term evolution over 70 s of the proto-neutron star cooling. We show that the impacts of different modeling of the composition are remarkable as in those due to different treatments of uniform matter in the gravitational collapse, bounce and shock propagation. The cooling of a proto-neutron star and the resulting neutrino emission are also affected by the compositional difference even if the same treatment is used in computing uniform matter of the EOS.

Details

Title
Effects of nuclear matter and composition in core-collapse supernovae and long-term proto-neutron star cooling
Author
Sumiyoshi, Kohsuke 1 ; Furusawa, Shun 2 ; Nagakura, Hiroki 3 ; Harada, Akira 4 ; Togashi, Hajime 5 ; Ken’ichiro Nakazato 6 ; Suzuki, Hideyuki 7 

 Numazu College, National Institute of Technology , 3600 Ooka , Numazu, Shizuoka 410-8501, Japan 
 College of Science and Engineering, Kanto Gakuin University , 1-50-1 Mutsuurahigashi, Kanazawa-ku, Yokohama, Kanagawa 236-8501, Japan 
 Division of Science, National Astronomical Observatory of Japan , 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan 
 Interdisciplinary Theoretical and Mathematical Sciences Program (iTHEMS) , RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan 
 Department of Physics, Tohoku University, 6-3 Aramaki Aza-Aoba , Aoba-ku, Sendai, Miyagi 980-8578, Japan 
 Faculty of Arts and Science, Kyushu University, 744 Motooka , Nishi-ku, Fukuoka 819-0395, Japan 
 Faculty of Science and Technology, Tokyo University of Science , 2641 Yamazaki, Noda, Chiba 278-8510, Japan 
Publication year
2023
Publication date
Jan 2023
Publisher
Oxford University Press
e-ISSN
20503911
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3171495038
Copyright
© The Author(s) 2022. Published by Oxford University Press on behalf of the Physical Society of Japan. This work is published under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.