Radiative Transfer: Asymptotic Solution of the Kinetic Equation of Radiation Propagation, Asymptotic Approximation of the Nth Order and Refined Boundary Conditions

• Published in: Astronomy reports Vol. 67; no. 12; pp. 1462 - 1472
• Main Authors: Serov, S. A., Serova, S. S.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.12.2023; Springer Nature B.V
• Subjects: Approximation; Astronomy; Asymptotic methods; Asymptotic series; Boundary conditions; Kinetic equations; Mathematical analysis; Observations and Techniques; Physics; Physics and Astronomy; Radiative transfer; Scattering; asymptotic approximation of the; kinetic equation; radiative transfer; asymptotic solution; structure of the galaxy; stars; th order; refined boundary conditions

A new asymptotic approximation of the n th order is proposed for use in calculations of radiation propagation in optically thick media without scattering; the asymptotic approximation is simpler and more accurate than the well-known diffusion approximation. It is shown that for optically thick media...