Probing the nuclear activity with supermassive black holes

Details Probing the nuclear activity with supermassive black holes Probing the nuclear activity with supermassive black holes

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ap%26ss.284..565i&link_type=abstract

Astrophysics and Space Science, v. 284, Issue 2, p. 565-568 (2003).

Physics

4

Galaxies: Active, Galaxies: Seyfert, Galaxies: Nuclei, Quasars: General, Black Hole Physics

Scientific paper

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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