Common disc-jet coupling in accreting objects

The “fundamental plane of accreting black holes” and an empirical connection between X-ray binaries (XRBs) and active galactic nuclei (AGN) based on variability properties is presented. Following these connections we construct disc-fraction luminosity diagrams (DFLD), a generalisation of hardness-intensity diagrams used for XRBs. We show that the radio-loudness of AGN depends on the position in the DFLD similar to what is observed in XRBs. For those XRBs and AGN on the right side of the diagram (hard state XRBs, LLAGN and many radio-loud quasars) we show that the jet power and accretion rate can be estimated from the core radio emission. This accretion measure is used to explore the dependence of the bolometric luminosity on the accretion rate.