Reverberation mapping is the principal method for determining the masses of the central black holes that power active galactic nuclei (AGNs). We discuss the importance of using line dispersion as opposed to full width at half maximum (FWHM) as the line-width measure in computing AGN black hole masses to avoid biasing (stretching) the AGN black hole mass scale. We argue that narrow-line Seyfert 1 (NLS1) galaxies are, for the most part, the low-luminosity extremes of a class of objects that should be defined by accretion rate rather than simply by line width.

Reverberation Mapping and Implications for Narrow-Line Seyfert 1 Galaxies

Dalla Bontà, E.
2018

Abstract

Reverberation mapping is the principal method for determining the masses of the central black holes that power active galactic nuclei (AGNs). We discuss the importance of using line dispersion as opposed to full width at half maximum (FWHM) as the line-width measure in computing AGN black hole masses to avoid biasing (stretching) the AGN black hole mass scale. We argue that narrow-line Seyfert 1 (NLS1) galaxies are, for the most part, the low-luminosity extremes of a class of objects that should be defined by accretion rate rather than simply by line width.
2018
Revisiting narrow-line Seyfert 1 galaxies and their place in the Universe
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3355817
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