The effect of neutrino transport on the collapse of iron stellar cores

Details The effect of neutrino transport on the collapse of iron stellar cores The effect of neutrino transport on the collapse of iron stellar cores

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...318..744m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 318, July 15, 1987, p. 744-759. Research supported by Los Alamos National L

Statistics

Computation

67

Gravitational Collapse, Iron, Neutrinos, Particle Diffusion, Stellar Cores, Supernovae, Computational Astrophysics, Dense Plasmas, Equations Of State, Particle Motion, Stellar Mass

Scientific paper

A multigroup flux-limited diffusion approximation to neutrino transport, correct to first order in material velocities, is described. The role of neutrino-electron scattering in determining core deleptonization is studied using a modified Fokker-Planck approximation in which adjacent neutrino energy groups are coupled. The moderate deleptonizaton obtained during infall restricts homologous core masses to less than 0.8 solar mass. With 0.6-0.8 solar mass of outer core to traverse, nuclear dissociation alone stalls the shock waves produced at core bounce. In addition, neutrino energy losses remove at least another 4 x 10 to the 51st ergs. In no case is matter ejected promptly as a direct result of the initial shock wave.

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