Radiative transfer in supernova-like envelopes - Curvature and diffusion effects

Details Radiative transfer in supernova-like envelopes - Curvature and diffusion effects Radiative transfer in supernova-like envelopes - Curvature and diffusion effects

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...208..166s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 208, no. 1-2, Jan. 1989, p. 166-170. Research supported by the Accion Integrad

Astronomy and Astrophysics

Astrophysics

6

Radiative Transfer, Stellar Envelopes, Supernovae, Spectrum Analysis, Stellar Temperature, Supernova Remnants

Scientific paper

The temperatures and densities of SN envelopes determine that radiation is the dominant form of energy there and, likewise, that energy is mainly transferred by radiation. A good description of radiative transfer is thus necessary. Here it is shown that, if envelope opacity is dominated by scattering, a generalized Eddington relationship works also very easily and leads to results which are even better than those for the pure absorption case. Moreover, due to its accuracy and simplicity, this closure relationship will also be very useful when the radiative-transfer equation is coupled to other hydrodynamics equations.

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