Evolution of Rising Magnetic Cavities and UHECR Acceleration

Details Evolution of Rising Magnetic Cavities and UHECR Acceleration Evolution of Rising Magnetic Cavities and UHECR Acceleration

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011scgg.conf...18g&link_type=abstract

"Structure in Clusters and Groups of Galaxies in the Chandra Era, 2011 Chandra Science Workshop held July 12-14, 2011. Edited by

Physics

Scientific paper

GN jets produce low density cavities in clusters of galaxies. Stability requires the presence of magnetic fields. We find self-consistent analytical structure of cavities containing large-scale electromagnetic fields and plasma expanding self-similarly. These solutions have no surface currents and, thus, are less susceptible to resistive decay, while they can be confined by a uniform pressure without deformation. If the adiabatic index of the plasma within the cavity is Γ>4/3, the expansion leads to the sudden formation of large-scale current sheets. We demonstrate that the ensuing explosive reconnection of the magnetic field can accelerate UHECRs.

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