Neutrino emission spectra of collapsing degenerate stellar cores - Calculations by the Monte Carlo method

Details Neutrino emission spectra of collapsing degenerate stellar cores - Calculations by the Monte Carlo method Neutrino emission spectra of collapsing degenerate stellar cores - Calculations by the Monte Carlo method

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982azh....59..334l&link_type=abstract

(Astronomicheskii Zhurnal, vol. 59, Mar.-Apr. 1982, p. 334-345.) Soviet Astronomy, vol. 26, Mar.-Apr. 1982, p. 202-208. Transla

Astronomy and Astrophysics

Astronomy

1

Emission Spectra, Gravitational Collapse, Monte Carlo Method, Neutrinos, Stellar Cores, Stellar Spectra, Degenerate Matter, Late Stars, Mathematical Models, Spectrum Analysis

Scientific paper

The variation of the hard part of the neutrino emission spectra of collapsing degenerate stellar cores with matter having a small optical depth to neutrinos is analyzed. The interaction of neutrinos with the degenerate matter is determined by processes of neutrino scattering on nuclei (without a change in neutrino energy) and neutrino scattering on degenerate electrons, in which the neutrino energy can only decrease. The neutrino emission spectrum of a collapsing stellar core in the initial stage of the onset of opacity is calculated by the Monte Carlo method: using a central density of 10 trillion g/cu cm and, in the stage of deep collapse, for a central density of 60 trillion g/cu cm. In the latter case the calculation of the spectrum without allowance for effects of neutrino degeneration in the central part of the collapsing stellar core corresponds to the maximum possible suppression of the hard part of the neutrino emission spectrum.

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