Cosmic Ray Acceleration during Large Scale Structure Formation
arXiv:astro-ph/0412572 · doi:10.5303/JKAS.2004.37.5.483
Abstract
Clusters of galaxies are storage rooms of cosmic rays. They confine the hadronic component of cosmic rays over cosmological time scales due to diffusion, and the electron component due to energy losses. Hadronic cosmic rays can be accelerated during the process of structure formation, because of the supersonic motion of gas in the potential wells created by dark matter. At the shock waves that result from this motion, charged particles can be energized through the first order Fermi process. After discussing the most important evidences for non-thermal phenomena in large scale structures, we describe in some detail the main issues related to the acceleration of particles at these shock waves, emphasizing the possible role of the dynamical backreaction of the accelerated particles on the plasmas involved.
8 pages, 3 Figures, invited talk, to appear in proceedings of the 3rd Korean Astrophysics Workshop "Cosmic Rays and Magnetic Fields in Large Scale Structure", Pusan, Korea, August 2004, eds. H. Kang & D. Ryu, Journal of the Korean Astronomical Society
References in corpus (3)
Cited by in corpus (10)
- Cosmic rays in galaxy clusters and their non-thermal emission
- Observations of extended radio emission in clusters
- New scaling relations in cluster radio halos and the re-acceleration model
- Alfvenic reacceleration of relativistic particles in galaxy clusters in the presence of secondary electrons and positrons
- Gamma rays from clusters of galaxies
- High Energy Neutrinos from Cosmic Ray Interactions in Clusters of Galaxies
- Neutrinos and Gamma Rays from Galaxy Clusters
- Manufacturing cosmic rays in the evolving dynamical states of galaxy clusters
- Long-term evolution of non-thermal emission from Type Ia and core-collapse supernova remnants in a diversified circumstellar medium
- UHECR Acceleration in Dark Matter Filaments of Cosmological Structure Formation