Toward Precision Measurement of Central Black Hole Masses

Details Toward Precision Measurement of Central Black Hole Masses Toward Precision Measurement of Central Black Hole Masses

2010-01-20

arxiv.org/abs/1001.3675v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

10 pages, 2 figures. To be published in the Proceedings of IAU Symposium 267 "Co-Evolution of Central Black Holes and Galaxies

Scientific paper

We review briefly direct and indirect methods of measuring the masses of black holes in galactic nuclei, and then focus attention on supermassive black holes in active nuclei, with special attention to results from reverberation mapping and their limitations. We find that the intrinsic scatter in the relationship between the AGN luminosity and the broad-line region size is very small, ~0.11 dex, comparable to the uncertainties in the better reverberation measurements. We also find that the relationship between reverberation-based black hole masses and host-galaxy bulge luminosities also seems to have surprisingly little intrinsic scatter, ~0.17 dex. We note, however, that there are still potential systematics that could affect the overall mass calibration at the level of a factor of a few.

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