Electron capture and stellar core implosion

Details Electron capture and stellar core implosion Electron capture and stellar core implosion

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....93..309c&link_type=abstract

Astronomy and Astrophysics, vol. 93, no. 1-2, Jan. 1981, p. 309-314.

Astronomy and Astrophysics

Astrophysics

Electron Capture, Gravitational Collapse, Implosions, Supernovae, Chemical Composition, Equations Of State, Neutrinos, Protostars, Reaction Kinetics, Stellar Evolution, Stellar Models

Scientific paper

In order to examine the role of electron capture as a trigger of implosion, the change of chemical composition in a highly evolved stellar core is followed. For simplicity, a one-shell model of presupernova is used to treat the hydrodynamics, and the problem of neutrino energy transfer is short-circuited by the introduction of a single parameter. The e-capture rates are obtained from the gross theory of nuclear beta decay. Calculations are done for three different degrees of neutrino confinement, and the results show that the e-capture is very efficient as a trigger mechanism of the implosion.

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