Physics
Scientific paper
Apr 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...497..563h&link_type=abstract
Astrophysical Journal v.497, p.563
Physics
43
Black Hole Physics, Galaxies: Active, Galaxies: Jets, Plasmas
Scientific paper
We quantitatively solve the problem of plasma supply to the stationary, axisymmetric, force-free magnetosphere of a rotating black hole residing in an active galactic nucleus. At the plasma source from which both inflowing and outflowing charge-separated plasmas originate, the shortage of charge will lead to the emergence of a strong electric field along the magnetic field line. The parallel electric field accelerates migratory electrons and/or positrons to ultrarelativistic energies. These relativistic electrons/positrons scatter background photons to produce high-energy gamma -rays that can materialize as pairs by colliding with background photons. The produced pairs replenish the inflowing and outflowing charges and are accelerated to result in a stationary pair production cascade. It is demonstrated that a sufficient amount of plasma can be supplied for the Blandford-Znajek process to work effectively.
Hirotani Kouichi
Okamoto Isao
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