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Fig. 1.

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JED-SAD hybrid disk configuration and its associated outflows in the hard state. The JED is settled from the ISCO risco up to the transition radius rJ, beyond which an SAD is established. A vertical large-scale magnetic field threads the whole region up to the axis. The red zone is the relativistic Blandford-Znajek spine, the blue zone is the subrelativistic to mildly relativistic Blandford-Payne jet launched from the JED, and the gray shaded area is the outer magnetic sheath, with only an unsteady sub-Alfvénic outflow (wind). The optimal location for the jet instability is the altitude zI, where the outer magnetic surface anchored at rJ is starting to recollimate toward the axis, defining the jet radius rjet.

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