Acceleration of Ultrahigh Energy Cosmic Rays by Shocks in Active Galactic Nuclei

Details Acceleration of Ultrahigh Energy Cosmic Rays by Shocks in Active Galactic Nuclei Acceleration of Ultrahigh Energy Cosmic Rays by Shocks in Active Galactic Nuclei

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....2..687h&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

Scientific paper

We intro duce our model for collimation and magnetic field generation of electron-p ositron-ion jets in active galactic nuclei (AGN). The stream along the jet direction with the excess electrons generates the toroidal magnetic field, which contributes to self-pinching of the constituent current. The huge net current necessarily split into many filaments, each carrying one unit current characterized by the Alfv´n limit. The resultant filamentary structures and transverse magnetic e field well account for recent observations. Moreover, if a shock wave is established and passing through along the jet axis, cosmic rays can be effectively accelerated by the first order Fermi mechanism. Considering some energy loss processes, we estimate the attainable maximum energies of accelerated particles up to 1021 eV, which are in good accordance with recent data.

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