Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap%26ss.297...21d&link_type=abstract
Astrophysics and Space Science, Volume 297, Issue 1-4, pp. 21-30
Astronomy and Astrophysics
Astrophysics
Unidentified Sources, Gamma-Ray Emission, Cosmic Rays
Scientific paper
We discuss the properties of gamma-ray radiation accompanying the acceleration of cosmic rays via the converter mechanism. The mechanism exploits multiple photon-induced conversions of high-energy particles from charged into neutral state (namely, protons to neutrons and electrons to photons) and back. Because a particle in the neutral state can freely cross the magnetic field lines, this allows to avoid both particle losses downstream and reduction in the energy gain factor, which normally takes place due to highly collimated distribution of accelerated particles. The converter mechanism efficiently operates in relativistic outflows under the conditions typical for Active Galactic Nuclei, Gamma-Ray Bursts, and microquasars, where it outperforms the standard diffusive shock acceleration.
Aharonian Felix A.
Derishev Evgeny V.
Kocharovsky Vitaly V.
Kocharovsky Vl. V.
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