Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002chee.conf..217h&link_type=abstract
CURRENT HIGH-ENERGY EMISSION AROUND BLACK HOLES . Proceedings of the 2nd KIAS Astrophysics Workshop. Held 3-8 September 2001 in
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
We investigate a stationary pair production cascade in the magnetosphere of a rotating black hole. The charge depletion due to global flows of charged particles, causes a large electric field along the magnetic field lines. Migratory electrons and/or positrons are accelerated by this field to radiate gamma-rays via inverse-Compton scatterings. Some of such gamma-rays collide with the X-rays and materialize as pairs in the accelerator. The replenished charges partially screen the electric field, which is self-consistently solved, together with the distribution functions of particles and gamma-rays. By solving these Vlasov equations, we demonstrate that sufficient amount of plasmas can be supplied for the Blandford-Znajek process to work effectively in the magnetosphere of a super-massive black hole residing in an active galactic nucleus.
Hirotani Kouichi
Okamoto Isao
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