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The classical stellar atmosphere problem.
Werner, K.; Dreizler, S.
The authors introduce the classical stellar atmosphere problem and describe in detail its numerical solution. The problem consists of the solution of the radiation transfer equations under the constraints of hydrostatic, radiative and statistical equilibrium (non-LTE). They outline the basic idea of the accelerated lambda iteration (ALI) technique…
Inversion methods in helioseismology and solar tomography.
Kosovichev, A. G.
Basic methods by which the internal structure and dynamics of the Sun can be inferred from observed frequencies of solar oscillations and acoustic travel times are discussed. The methods for inverting the oscillation frequencies are based on a variational formulation of the adiabatic eigenvalue problem for a star. The inversion technique formulate…