Nucleosynthesis in neutrino-driven, aspherical supernova explosion of a massive star

Journal Article · Fri Oct 28 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3628410· OSTI ID:21612084

Fujimoto, S ^[1]; Hashimoto, M ^[2]; Ono, M ^[3]; Kotake, K ^[4]; Ohnishi, N ^[5]

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1. Kumamoto National College of Technology, 2659-2 Suya, Goshi 861-1102 (Japan)
2. Department of Physics, School of Sciences, Kyushu University, Fukuoka 810-8560 (Japan)
3. Department of Physics, School of Sciences, Kyushu University (Japan)
4. Division of Theoretical Astronomy, National Astronomical Observatory (Japan)
5. Department of Aerospace Engineering, Tohoku University (Japan)

We examine explosive nucleosynthesis of p-nuclei during a delayed neutrino-driven, aspherical supernova explosion aided by standing accretion shock instability, based on two-dimensional hydrodynamic simulations of the explosion of a 15M{sub {center_dot}} star. We find that p-nuclei are mainly produced through {gamma}-processes, and that the nuclei lighter than {sup 92}Mo are abundantly synthesized in slightly neutron-rich bubbles with electron fractions of Y{sub e}{<=}0.48. {sup 94}Mo, {sup 96}Ru, and {sup 98}Ru, are underproduced compared with the solar system, as in the spherical model.

• OSTI ID: 21612084
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1377; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
ASTROPHYSICS
BARYONS
COMPUTERIZED SIMULATION
ELECTRONS
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
EVOLUTION
FERMIONS
FLUID MECHANICS
HADRONS
HYDRODYNAMICS
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MECHANICS
MOLYBDENUM 92
MOLYBDENUM 94
MOLYBDENUM ISOTOPES
NANOSECONDS LIVING RADIOISOTOPES
NEUTRINOS
NEUTRONS
NUCLEAR MODELS
NUCLEI
NUCLEONS
NUCLEOSYNTHESIS
PHYSICS
RADIOISOTOPES
RUTHENIUM 96
RUTHENIUM 98
RUTHENIUM ISOTOPES
SIMULATION
SOLAR SYSTEM
SPHERICAL MODEL
STABLE ISOTOPES
STAR EVOLUTION
SYNTHESIS
TWO-DIMENSIONAL CALCULATIONS