Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..274..263w&link_type=abstract
Advances in Plasma Astrophysics, Proceedings of the International Astronomical Union, IAU Symposium, Volume 274, p. 263-266
Astronomy and Astrophysics
Astrophysics
Acceleration Of Particles, Shock Waves, Radiation Mechanisms: Nonthermal, Galaxies: Active, Galaxies: Jets, Bl Lacertae Objects: Individual (1 Es 1218+30.4, Pks 2155-304)
Scientific paper
Understanding the variable emission of blazars observed with gamma-ray telescopes and Fermi has become a major challenge for theoretical models of particle acceleration. Here, we introduce a novel time-dependent emission model in which the maximum energy of particles is determined from a balance between Fermi type I and II acceleration energy gains and radiative energy losses, allowing for an explanation of both the characteristic spectral energy distribution of blazars and their intrinsic sub-hour variability. Additionally, we can determine the physical condition of the emitting plasma concerning its turbulence and typical shock speeds.
Spanier Felix
Weidinger Matthias
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