Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....57..279t&link_type=abstract
Astronomy and Astrophysics, vol. 57, no. 1-2, May 1977, p. 279-283.
Astronomy and Astrophysics
Astrophysics
8
Protostars, Radiative Transfer, Shock Discontinuity, Stellar Models, Astronomical Models, Astrophysics, Hydrodynamic Equations, Radiation Sources, Stellar Envelopes
Scientific paper
A numerical method is described which solves the transport problem of radiation in extended spherical envelopes. Assuming the mean free path of the photons to be much greater than the mean free path of the particles, it is possible to compute the radiative transfer across a shock front. Here, the state variables (temperature, density etc.) are in general discontinuous as is the source function, whereas the radiation field remains continuous. The chief aim of the present investigation is to derive 'jump' conditions for the radiation field and to emphasize the importance of the Eddington factor as the quantity linking hydrodynamics and radiative transfer in a very effective way. An example of particular interest is given using model calculations of a protostar with a strongly radiating accretion shock.
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