2004/01/08 by A. Merloni, Andrea Merloni, Merloni, Andrea
Physics and Astronomy · #Adaptive optics and wavefront sensing #Astrophysical Phenomena and Observations #Astrophysics (astro-ph) #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #Relativity and Gravitational Theory #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0401116
4 pages, 2 figures. Proceedings of the Princeton meeting on "AGN Physics with the Sloan Digital Sky Survey" (July 2003), ed. G. T. Richards and P. B. Hall, ASP Conf. Series, in press
arxiv created 2004/01/08 · openalex publication_date 2004/01/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Studying a sample of both strongly and weakly active galactic nuclei with\nmeasured masses and 5 GHz and 2-10 keV core luminosities, together with a few\ngalactic black holes simultaneously observed in the radio and X-ray bands,\nMerloni, Heinz, & Di Matteo (2003) showed that the sources are correlated\nthrough a ``fundamental plane'' relationship in the three-dimensional (log LR,\nlog LX, log M) space. Here I elaborate on how such a relationship can be used\nto infer directly mass and accretion rate of any black hole given its radio and\nX-ray fluxes, complementing the information obtained from optical/UV surveys.\nAs an example, I show how the local X-ray and radio luminosity functions,\ncoupled with the black hole mass function derived from the M-\σ relation,\nprovide us with an accretion rate function. It is found that the typical X-ray\nEddington ratio of an active black hole at redshift zero is about 5 \×\n10-4.\n