A short note on climbing gravity improbable: Superradiant ring   fellowship of launching the high Lorentz-factor outflows/jets
  The spin energy extraction from a rotating black hole by amplification of scalar waves inside superradiance resonance wedge cavity (ring), followed by jet formation via magnetic reconnection assisted by the amplified scalar fields, is proposed. This mechanism may explain the availability of energy for as well as the formation of relativistic jets with high Lorentz-factor in microquasars and quasars. It is speculated that it may also explain that the spin of the central black hole, which facilitates the formation of superradiance cavity, which in turn would produce the amplified scalar waves by taking the hole's spin energy, is the source for the distinction between radio-loud and radio-quiet active galaxies. 
Sandi Setiawan (University of Edinburgh)