Masses of Black Holes in Active Galactic Nuclei

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Masses of black holes in active galactic nuclei have now been measured in over 40 galaxies, primarily by reverberation mapping. The measured masses correlate well with host galaxy properties, specifically bulge velocity dispersion and luminosity. The radius of the broad-line region is very well correlated with the luminosity of the AGN, making it possible to estimate masses of large numbers of black holes from single spectra. We outline sources of errors and bias in estimating black hole masses in active nuclei and estimate the intrinsic scatter in the various interrelationships.

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