Abstract
We report three new or updated techniques for probing the parameters of active galaxies based on the masses of their central black holes MBH). First, we derived a near-IR analog of the bulge luminosity versus MBH relationship. The low scatter makes it a promising new tool to study the black hole demographics. Next, we present relations between MBH and the10 μm and 2-10 keV nuclear luminosity. They may help to study the MBH evolution over wide redshift ranges. Finally, we measured MBH in quasars from z ∼ 3.4 to z ∼ 0.3 to search directly for MBH growth. Surprisingly, we found no evidence for growth implying that the majority of quasar host galaxies have undergone their last major merger at z ≥ 3.
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Ivanov, V., Alonso-Herrero, A. Probing the nuclear activity with supermassive black holes. Astrophysics and Space Science 284, 565–568 (2003). https://doi.org/10.1023/A:1024045704186
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DOI: https://doi.org/10.1023/A:1024045704186