Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007apj...666..949l&link_type=abstract
The Astrophysical Journal, Volume 666, Issue 2, pp. 949-954.
Astronomy and Astrophysics
Astronomy
15
Ism: Cosmic Rays, Plasmas, Relativity, Waves
Scientific paper
We simulate the acceleration of electrons to relativistic energies due to the interaction of electrons with waves generated by longitudinal (i.e., electrostatic) streaming instabilities in plasmas. Two equal systems undergoing a streaming instability evolve, one according to the classical Newton's law and one according to the special relativity dynamics equation. The system that obeys Newton's law relaxes to a Maxwellian equilibrium distribution. In the case of the relativistic dynamics, the equilibrium distribution exhibits peaks in the phase space at high momenta and a larger number of particles at high energies. This steady electron population at higher energies could explain power-law energy distribution in many plasma physics and astrophysical systems.
Kaniadakis Giorgio
Lapenta Giovanni
Markidis Stefano
Marocchino Alberto
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