Double flows anchored in a Kerr black hole horizon – I. Meridionally self-similar MHD models with loading terms

ABSTRACT Recent observations of supermassive black holes have brought us new information on their magnetospheres. In this study, we attempt a theoretical modelling the coupling with jets and discs, via three innovations. First, propose semi-analytical MHD description steady relativistic inflow–outflow structure characteristic to extraction hole rotational energy. The mass-loading is ensured in thin layer, stagnation surface, by two-photon pair production originating gamma-ray emission from surrounding disc. double flow described near polar axis an axisymmetric meridionally self-similar model. Secondly, inflow outflow solutions are crossing critical points matched at surface. Knowledge field horizon gives angular momentum energy extracted hole. Finally, illustrate model specific examples double-flow varying energetic interaction between rotating When isorotation frequency half one, Poynting flux comparable one obtained using force-free assumption. two presented solutions, Penrose process dominates large colatitudes, while third dominated mid-colatitudes. Mass injection rate estimations, disc luminosity inner radius, give upper limit just above values for solutions. This pertinent describe flows axis, where more efficient.