Momentum and energy transfer by neutrino radiation to the mantle of a collapsing star and supernovae explosions

Details Momentum and energy transfer by neutrino radiation to the mantle of a collapsing star and supernovae explosions Momentum and energy transfer by neutrino radiation to the mantle of a collapsing star and supernovae explosions

Nov 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975zhetf..69.1473g&link_type=abstract

Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki, vol. 69, Nov. 1975, p. 1473-1483. In Russian.

Astronomy and Astrophysics

Astrophysics

5

Gravitational Collapse, Neutrinos, Stellar Temperature, Supernovae, Astrophysics, Carbon, Energy Transfer, Momentum Transfer, Radiative Transfer, Relativistic Plasmas

Scientific paper

Various mechanisms of energy and momentum transfer in mantles of massive collapsing stars are discussed, including coherent scattering of neutrinos by nuclei due to neutral currents. It is concluded that the mechanisms considered are ineffective in supernovae explosions. It is pointed out that in small-mass (below 2 solar masses) collapsing carbon-oxygen stars the neutrino radiation of the central nucleus heats the mantle matter to temperatures which are sufficient for ignition of carbon and oxygen. This may result in ejection of the star mantle and hence in a supernova explosion. The main heating mechanism is scattering of neutrinos by electrons. The efficiency of such heating is very great since under the physical conditions the electron gas is degenerate and possesses a relativistic Fermi energy.

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