Eight powers of ten: similarities in black hole accretion on all mass scales

Details Eight powers of ten: similarities in black hole accretion on all mass scales Eight powers of ten: similarities in black hole accretion on all mass scales

2007-06-26

arxiv.org/abs/0706.3838v1

Astronomy and Astrophysics

Astrophysics

Invited Review at the VI Microquasar Workshop: Microquasars and beyond, Sept 18-22 2006, Como, Italy. To be published online b

Scientific paper

In this paper we discuss the recent advances in the quantitative comparison of accretion, and the accretion:jet coupling, in accreting black holes in both X-ray binaries (where M ~ 10Msun) and Active Galactic Nuclei (10^5Msun < M < 10^9Msun). These similarities include the radiative efficiency and jet power as a function of accretion rate, which are themselves probably the origin of the `fundamental plane of black hole activity'. A second `fundamental plane' which connects mass, accretion rate and timing properties provides us with a further physical diagnostic. Patterns of radio loudness (i.e. jet production) as a function of luminosity and accretion state are shown to be similar for X-ray binaries and AGN. Finally we discuss how neutron stars are a useful control sample, and what the future may hold for this field.

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