Ultra High-Energy Cosmic Rays from Quasar Remnants

Details Ultra High-Energy Cosmic Rays from Quasar Remnants Ultra High-Energy Cosmic Rays from Quasar Remnants

Apr 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..oss.a3007h&link_type=abstract

American Physical Society, Ohio Section Spring 2004, April 16-17, 2004, Ohio University, Athens, Ohio, MEETING ID: OSS04, abstra

Physics

Scientific paper

The sources of Ultra High-Energy Cosmic Rays (UHECR) are still mysterious, but those at the highest energies may be accelerated in a compact dynamo, such as a quasar remnant. Such a dynamo is composed of a supermassive black hole with a substantial, accretion-supported magnetic field, an especially dark radiation environment, and near maximal spin. This kind of compact dynamo at the center of a giant eliptical galaxy is capable of accelerating protons to energies up to 10^20 eV, approximately matching the highest energies recorded. Out of a sample of nearby galaxies, we have identified four candidate quasar remnants that appear to be UHECR sources. The sources are identified in directions of low Galactic magnetic field, where the cosmic ray paths are less deflected. Future searches for extragalactic sources may have to use similar "magnetic windows."

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