Progress of the equation of state table for supernova simulations and its influence

Journal Article · Mon Nov 12 00:00:00 EST 2012 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4763369· OSTI ID:22075778

Sumiyoshi, Kohsuke ^[1]

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1. Numazu College of Technology, Ooka 3600, Numazu, Shizuoka 410-8501 (Japan) and Theory Center, High Energy Accelerator Research Organization (KEK),Oho 1-1, Tsukuba, Ibaraki 305-0801 (Japan)

We describe recent progress of the EOS tables for numerical simulations of core-collapse supernovae and related astrophysical phenomena. Based on the Shen EOS table, which has been widely used in supernova simulations, there is systematic progress by extending the degrees of freedom such as hyperons and quarks. These extended EOS tables have been used, for example, to study the neutrino bursts from the gravitational collapse of massive stars leading to the black hole formation. Observations of such neutrinos from galactic events in future will provide us with the information on the EOS. Recently, studies of the supernova EOS with the multi-composition of nuclei under the nuclear statistical equilibrium have been made beyond the single nucleus approximation as used in the Shen EOS. It has been found that light elements including deuterons are abundant in wide regions of the supernova cores. We discuss that neutrino-deuteron reactions may have a possible influence on the explosion mechanism through modifications of neutrino heating rates.

• OSTI ID: 22075778
• Journal Information: AIP Conference Proceedings, Vol. 1484, Issue 1; Conference: Conference on origin of matter and evolution of galaxies 2011, Wako (Japan), 14-17 Nov 2011; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
APPROXIMATIONS
ASTROPHYSICS
BLACK HOLES
COMPUTERIZED SIMULATION
DEGREES OF FREEDOM
DEUTERON REACTIONS
DEUTERONS
EQUATIONS OF STATE
GRAVITATIONAL COLLAPSE
HYPERONS
NEUTRINO-NEUTRON INTERACTIONS
NEUTRINO-PROTON INTERACTIONS
NEUTRINOS
NUCLEI
NUMERICAL ANALYSIS
QUARKS
SUPERNOVAE