Physics – Plasma Physics
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..dppfo1006t&link_type=abstract
American Physical Society, 45th Annual Meeting of the Division of Plasma Physics, October 27-31, 2003, Albuquerque, New Mexico,
Physics
Plasma Physics
Scientific paper
Radio-loud active galactic nuclei (AGN) is known to harbor a super-massive black hole of the order 10^8 solar mass. Gravitational energy on the order of one solar mass per year is thought to be released through accretion. The AGN accretion disk could be the most powerful magnetic dynamo machine that efficiently converts gravitational energy into magnetic field through helicity injection into its surroundings, much like laboratory spheromak formation and current drive by electrostatic helicity injection. Laboratory astrophysical experiment can be designed to uncover scaling laws on critical issues such as the magnetic collimation mechanism for jet formation, the energy content in the expanding magnetic bubble, and the flux conversion physics in the limit of Ψ/i_0≫ 1 where Ψ is the injected toroidal flux and i0 is the poloidal flux anchored on the disk. Theoretical analysis and numerical modeling will be presented to illustrate the basic physics issues, the experimental requirements for astrophysical relevance, and what can be expected from such an experiment.
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