Black Holes and Host Galaxies of NLS1s

Details Black Holes and Host Galaxies of NLS1s Black Holes and Host Galaxies of NLS1s

2000-05-08

arxiv.org/abs/astro-ph/0005130v1

New Astron.Rev. 44 (2000) 427-429

Astronomy and Astrophysics

Astrophysics

Contributed talk presented at the Joint MPE,AIP,ESO workshop on NLS1s, Bad Honnef, Dec. 1999, to appear in New Astronomy Revie

Scientific paper

10.1016/S1387-6473(00)00073-7

Recently, reliable mass estimates for the central black holes in AGN became feasible due to emission-line reverberation techniques. Using this method as a calibrator, it is possible to determine black hole masses for a wide range of AGN, in particular NLS1s. Do NLS1s have smaller black holes than ordinary Seyfert 1 galaxies? Are their black holes smaller compared to the sizes of their host galaxies? Do they have larger L/M ratios? Do NLS1s have hotter accretion disks? I confront these questions with accretion disk theory and with the data, showing that the above may well be the case.

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