Relativistic electron-positron jets in extragalactic gamma-ray sources

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

We present the modeling of a wide class of extragalactic gamma-ray loud sources in the framework of the two-flow model. This model involves a hot non-thermal relativistic electron-positron pair plasma confined inside a magnetized sub-relativistic electron-proton jet. The second component releases the energy necessary to maintain the non-thermal pair distribution against strong radiative (synchrotron and Inverse Compton) losses. The effects of different soft photon sources, pair production efficiency, and angle between the jet direction and the line of sight are discussed for the spectral modeling of gamma-ray spectra. In the case of a dominant soft photon component produced by an accretion disk, we provide fits of the high energy spectra of radio-galaxies, Blazars and MeV Blazars.

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