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High Energy Radiation Generated at Boundary Shear Layers of Relativistic Jets

Published online by Cambridge University Press:  05 March 2013

Ł. Stawarz  and
M. Ostrowski
Ł. Stawarz*
Affiliation:
Obserwatorium Astronomiczne, Uniwersytet Jagielloński, ul. Orla 171, Kraków, Poland
M. Ostrowski
Affiliation:
Obserwatorium Astronomiczne, Uniwersytet Jagielloński, ul. Orla 171, Kraków, Poland
*
[email protected]
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Abstract

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A simple model of cosmic ray electron acceleration at the jet boundary yields a power law particle energy distribution of ultra-relativistic 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 Comptonisation 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 the X-ray band in comparison to the lower frequencies.

Keywords

acceleration of particlesgalaxies: jetsradiation mechanisms: non-thermal
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 19 , Issue 1 , 2002 , pp. 22 - 25
Copyright
Copyright © Astronomical Society of Australia 2002

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