Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jkass..29...99t&link_type=abstract
Journal of the Korean Astronomical Society, v. 29 Supplement, p.S99
Astronomy and Astrophysics
Astronomy
Blazars: Gamma Rays, Blazars: Relativistic Jets
Scientific paper
The author discusses implications of gamma-ray emission from blazars based on electron acceleration by shock waves in a relativistic jet. The number spectrum of electrons turns out to be a broken power law; while at low energies the power law index has a universal value of 2, at high energies it steepens to an index of 3 because of strong radiative cooling. This spectrum can basically reproduce the observed spectral break between X-rays and gamma-rays. The author shows that energetics of relativistic jets can be well explained by this model. He estimates physical quantities of the relativistic jets by comparing the prediction with observations. The results show that the jets are particle dominated and are comprised of electron-positron pairs. A connection between gamma-ray emission and radiation drag is also discussed.
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