A fundamental plane of black hole activity: pushing forward the unification scheme

Details A fundamental plane of black hole activity: pushing forward the unification scheme A fundamental plane of black hole activity: pushing forward the unification scheme

2004-10-20

arxiv.org/abs/astro-ph/0410481v1

Astrophys.Space Sci. 300 (2005) 45-53

Astronomy and Astrophysics

Astrophysics

10 pages, 4 figures. To appear in the proceedings of "From X-ray Binaries to Quasars: Black Hole Accretion on All Mass Scales"

Scientific paper

10.1007/s10509-005-1183-x

We examine the disc--jet connection in stellar mass and supermassive black holes by investigating the properties of their compact emission in the hard X-ray and radio bands. We compile a sample of ~100 active galactic nuclei with measured mass, 5 GHz core emission, and 2-10 keV luminosity, together with 8 galactic black holes with a total of about 50 simultaneous observations in the radio and X-ray bands. Using this sample, we study the correlations between the radio (L_R) and the X-ray (L_X) luminosity and the black hole mass (M). We find that the radio luminosity is correlated with both M and L_X, at a highly significant level. We show how this result can be used to extend the standard unification by orientation scheme to encompass unification by mass and accretion rate.

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