Radiative transfer in dusty nebulae

Mathematics – Logic

Scientific paper

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Dust, Nebulae, Radiative Transfer, Albedo, Anisotropy, Infrared Spectra, Photons, Ray Tracing

Scientific paper

The effects of dust scattering on observable optical and infrared parameters, and the accuracy of approximate solutions were examined. The equation of radiative transfer in a static and homogeneous, but not necessarily uniform, distribution gas and dust around a central empty core with a point source of energy at its center was solved. The dust properties were characterized by a phenomenological extinction cross section, albedo and parameters describing the anisotropy of dust scattering. For ultraviolet photons, ionization equilibrium equations for the gas were solved, and for infrared photons a self-consistent dust temperature was calculated. Ray tracing was used to solve for the angular dependence of the intensity.

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