An idealized model for dust accretion in active galactic nuclei

Buitrago, J.; Mediavilla, E.
Referencia bibliográfica

IN: Structure and evolution of active galactic nuclei; Proceedings of the International Meeting, Trieste, Italy, April 10-13, 1985 (A87-13252 03-90). Dordrecht, D. Reidel Publishing Co., 1986, p. 503-507.

Fecha de publicación:
0
1986
Número de autores
2
Número de autores del IAC
0
Número de citas
0
Número de citas referidas
0
Descripción
With an adequate supply of matter, the inward drifting of dust particles induced by the Poynting-Robertson effect can lead to the formation of a shell or disk-like structure around the source of radiation. In a steady state, the Poynting-Robertson effect produces a spatial density of dust in the form of 1/r which in turn gives rise to a mid-infrared spectrum where Fnu varies as 1/nu. It is believed that this report could be of interest for the interpretation of the infrared excess found in many extragalactic sources.