Computing radiative equilibria with Monte Carlo techniques

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Radiative Transfer, Methods: Numerical, Stars: Atmospheres

Scientific paper

Monte Carlo techniques are used iteratively to compute the radiative equilibrium temperature stratification of a non-grey, spherically-extended stellar atmosphere in LTE. The derived temperature distribution agrees well with that predicted by Castor's (\cite{castor74}) code, as also does the emergent spectrum. However, in contrast to such conventional codes, the adopted Monte Carlo techniques and associated temperature-correction procedure are in no way restricted to 1-D stratifications. Accordingly, this successful test indicates that realistic 2- and 3-D radiative equilibria can be similarly computed.

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