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An Idealized Model for Dust Accretion in Active Galactic Nuclei

  • J. Buitrago
  • E. Mediavilla
Part of the Astrophysics and Space Science Library book series (ASSL, volume 121)

Abstract

With an adequate supply of matter, the inwards 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 produce a spatial density of dust going like l/r which in turn give rise to a mid-infrared spectrum Fν∝l/ν. We think that this short report could be of interest for the interpretation of the infrared excess found in many extragalactic sources.

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References

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Copyright information

© Springer Science+Business Media Dordrecht 1986

Authors and Affiliations

  • J. Buitrago
    • 1
  • E. Mediavilla
    • 1
  1. 1.Instituto de Astrofísica de CanariasUniversity of La LagunaTenerifeSpain

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