Description
Dust obscured objects cannot be studied directly in the UV/optical, since the dust shields most of the visible light. To derive the UV/optical component or to constrain the morphological structure from available IR/submm observations, a detailed model of the interaction of photons with the dust is required. The problem is to solve the radiative transfer (RT) equation. Analytically, the RT problem can only be done in some simple configurations, for example by assuming spherical or disk symmetry in which either scattering or absorption is neglected and the wavelength dependency of the dust cross section is strongly simplified, e.g. by a gray body. Nature, however, is usually not well approximated by such assumptions and numerical modeling is the only way to solve this problem. In the talk a Monte Carlo Radiative Transfer scheme for solving the radiative transfer of polarised light in dust enshrouded media in arbitrary geometries is presented and results of different treatments for computing cross sections of spheroidal dust particles are compared.
