Speaker
Vladimir Zirakashvili
(Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation, Moscow, Russia)
Description
It is shown that Eddington-like accretion event in the Galactic center several
million years ago and particle acceleration at accompanying shocks and jets could explain the the
observed cosmic ray spectrum at energies above 1 PeV. Cosmic ray particles are confined in extended
(several hundred kiloparsec in size) galactic halo. It is shown that the halo magnetic field could be as small as
$2\times 10^{-7}$ G for the effective confinement.
Primary authors
Vladimir Zirakashvili
(Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation, Moscow, Russia)
Svetlana Rogovaya
(IZMIRAN)
