High Energy Radiation Generated at Boundary Shear Layers of Relativistic Jets

Details High Energy Radiation Generated at Boundary Shear Layers of Relativistic Jets High Energy Radiation Generated at Boundary Shear Layers of Relativistic Jets

2001-11-06

arxiv.org/abs/astro-ph/0111130v1

Astronomy and Astrophysics

Astrophysics

7 pages, 1 figure included, accepted for publication by PASA Volume 19, Number 1: Special Issue on AGN Variability Across the

Scientific paper

10.1071/AS01092

A simple model of cosmic ray electron acceleration at the jet boundary (Ostrowski 2000) yields a power-law particle energy distribution of ultrarelativistic electrons with an energy cut-off growing with time and finally, a growing particle bump at the energy, where energy gains equal radiation losses. For such electron distribution, in tens-of-kpc scale jets, we derived the observed time varying spectra of synchrotron and inverse-Compton radiation, including comptonization of synchrotron and cosmic microwave background photons. Slowly varying spectral index along the jet in the `low-frequency' spectral range is a natural consequence of boundary layer acceleration. Variations of the high energy bump of the electron distribution can give rise to anomalous behaviour in X-ray band in comparison to the lower frequencies.

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