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Monte Carlo simulations of dusty gas discs around supermassive black holes

Published online by Cambridge University Press:  01 August 2006

Maarten Baes  and
Sławomir Piasecki
Maarten Baes
Affiliation:
Universiteit Gent, Belgium, email: maarten.baes@ugent.be
Sławomir Piasecki
Affiliation:
Universiteit Gent, Belgium, email: maarten.baes@ugent.be Adam Mickiewicz University, Poznań, Poland
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Abstract

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Using detailed Monte Carlo radiative transfer simulations in realistic models for galactic nuclei, we critically investigate the influence of interstellar dust in ionised gas discs on the rotation curves and the resulting black hole mass measurements. We find that absorption and scattering by interstellar dust leaves the shape of the rotation curves basically unaltered, but slightly decreases the central slope of the rotation curves. As a result, the “observed” black hole masses are systematically underestimated by some 10 to 20% for realistic optical depths.

Keywords

Galaxies: nuclei – black hole physics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S238: Black Holes from Stars to Galaxies – Across the Range of Masses , August 2006 , pp. 321 - 322
Copyright
Copyright © International Astronomical Union 2007

References

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