Galaxies, SMBHs, Magnetic AGNs, and Extra Galactic CR formation.
COFFEE_KLATCH · Invited
Abstract
The Brightest Matter, the Brightest Energy, the brightest quasi-star of the Universe (by very many orders of magnitude) is associated with the formation of the majority of the thin, flat rotation curve, spiral galaxies, each with a Super Massive Black Hole near their exact center. The transformation of the initial perturbation spectrum of the structure of the cooling baryonic fraction of the universe into a galaxy and finally into a SMBH is an awesomely complicated process. The further transformation of the free-energy of the formation of the SMBHs into magnetic fields, jets, Radio Lobes, and finally Extra Galactic Cosmic Rays, is even more complicated, each an irresistible physics challenge. A few such Examples: Initial structure perturbations have a small Reynolds number, $\sim $100. Computer simulations probably miss angular momentum transport in the collapse of proto galactic baryonic clouds to flat rotation curve galaxies. The seed BH at its center is probably preceded by a collapse mediated by pair neutrino emission, to a neutron star and a supernova. The unbinding of the supermassive star by the supernova is followed by fall-back and then by a black collapse until half the mass of the SMBH is accreted in a time of 1/20 the Eddington limit time. Only then can a Keplerian disk emerge. Event horizon physics dominates black collapse. The event horizon physics also dominates the $\alpha \omega $ dynamo that must precede the highly coherent helical magnetic jet formation. A coherent magnetic helix requires a large scale coherent dynamo. The dissipation of the current supporting the torsion-dominated helical magnetic fields probably occurs by current carrier starvation and resulting current carrier acceleration and momentum. The collimation and acceleration by magnetic fields occasionally leads to emission of $\sim $ 100 Mev gamma rays at $\sim $x100 the Eddington limit and probably CRs with E $>$ 10$^{30}$ ev.
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Authors
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Stirling Colgate
Los Alamos National Laboratory