R-process Nucleosynthesis in Supernova Explosion

We investigate the possibility of the r-process during the magnetohydrodynamical (MHD) explosion of supernova in a massive star of 13 M{sub {center_dot}} with the effects of neutrinos included. Contrary to the case of the spherical explosion, jet-like explosion due to the combined effects of rotatio...

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Bibliographic Details
Main Authors: Saruwatari, M., Hashimoto, M., Kotake, K., Yamada, S.
Format: Conference Proceeding
Language:English
Subjects:
ASTROPHYSICS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BINARY STARS
CONFIGURATION
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ERUPTIVE VARIABLE STARS
EVOLUTION
FERMIONS
FLUID MECHANICS
HYDRODYNAMICS
IRON
LAYERS
LEPTONS
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MASSLESS PARTICLES
MECHANICS
METALS
MOTION
NEUTRINOS
NUCLEAR PHYSICS AND RADIATION PHYSICS
NUCLEI
NUCLEOSYNTHESIS
PHYSICS
R PROCESS
ROTATION
SHOCK WAVES
SPHERICAL CONFIGURATION
STAR EVOLUTION
STARS
SUPERNOVAE
SYNTHESIS
TRANSITION ELEMENTS
VARIABLE STARS
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Summary:We investigate the possibility of the r-process during the magnetohydrodynamical (MHD) explosion of supernova in a massive star of 13 M{sub {center_dot}} with the effects of neutrinos included. Contrary to the case of the spherical explosion, jet-like explosion due to the combined effects of rotation and magnetic field lowers the electron fraction significantly inside the layers. We find that the ejected material of low electron fraction responsible for the r-process comes out from the inner deep region of the core that is made up of iron-group nuclei. This leads to the production of the second to third peak in the solar r-process elements. We suggest that there are some variations in the r-process nucleosynthesis according to the initial conditions of rotational and magnetic fields.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3628432