Physical processes in collapse driven supernova

Technical Report · Fri Nov 01 04:00:00 EST 1985

DOI:https://doi.org/10.2172/5894155· OSTI ID:5894155

Mayle, R W

A model of the supernova explosion is discussed. The method of neutrino transport is discussed, since the explosive mechanism depends on neutrino heating of the material behind the accretion shock. The core region of these exploding stars becomes unstable to convective motions during the supernova evolution. Convective mixing allows more neutrinos to escape from under the neutrinosphere, and thus increases the amount of heating by neutrinos. An approximate method of incorporating convection is described, and some results of including convection in a computer model is presented. Another phenomena is seen in computer simulations of supernova, oscillations in the neutrino luminosity and mass accretion rate onto the protoneutron star. The last topic discussed in this thesis describes the attempt to understand this oscillation by perturbation of the steady state solution to equations approximating the complex physical processes occurring in the late time supernova. 42 refs., 31 figs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5894155
• Report Number(s): UCRL-53713; ON: DE86007792
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR DISTRIBUTION
BARYONS
COMPUTERIZED SIMULATION
CONVECTION
CROSS SECTIONS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY TRANSFER
ERUPTIVE VARIABLE STARS
FERMIONS
GRAVITATIONAL COLLAPSE
HADRONS
HEAT TRANSFER
INFORMATION
MASS TRANSFER
NEUTRINO OSCILLATION
NUMERICAL DATA
SIMULATION
STAR ACCRETION
STAR EVOLUTION
STARS
SUPERNOVAE
THEORETICAL DATA
VARIABLE STARS