02/03/2005– Auditório Principal Bloco G – IAG/USP

Dra. Barbara Ercolano

Depto. de Física e Astronomia, University College London – Reino Unido

Título/Title: The 3D MOCASSIN: Monte Carlo dust and gas radiative transfer of realistic nebulae

Resumo/Abstract:

The study of photoionized environments is fundamental to many astrophysical problems. Up to the present, most photoionization codes have numerically solved the equations of radiative transfer by making the extreme simplifying assumption of spherical symmetry. A self-consistent, three-dimensional radiative transfer code has been recently developed using Monte Carlo techniques. The code, Mocassin, is designed to build realistic models of photoionized nebulae having arbitraries geometry and density distributions with both the stellar and diffuse radiation fields treated self-consistently. In addition, the code is capable of tretating one or more exciting stars located at non-central locations. The new version of the code also includes a treatment of dust opacities within the radiative transfer. The main structure and computational methods used, as well as some of the most recent results will described in this talk.

 

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