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Radiation from matter entrainment in astrophysical jets: the AGN case

Published online by Cambridge University Press:  24 February 2011

A. T. Araudo ,
V. Bosch-Ramon  and
G. E. Romero
A. T. Araudo
Affiliation:
Instituto Argentino de Radioastronomía (CCT La Plata, CONICET), C.C.5, 1894 Villa Elisa, Buenos Aires, Argentina email: aaraudo@fcaglp.unlp.edu.ar, romero@fcaglp.unlp.edu.ar Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque, 1900 La Plata, Argentina
V. Bosch-Ramon
Affiliation:
Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2, Ireland email: valenti@cp.dias.ie
G. E. Romero
Affiliation:
Instituto Argentino de Radioastronomía (CCT La Plata, CONICET), C.C.5, 1894 Villa Elisa, Buenos Aires, Argentina email: aaraudo@fcaglp.unlp.edu.ar, romero@fcaglp.unlp.edu.ar Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque, 1900 La Plata, Argentina
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Abstract

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Jets are found in a variety of astrophysical sources. In all the cases the jet propagates with a supersonic velocity through the external medium, which can be inhomogeneous, and inhomogeneities could penetrate into the jet. The interaction of the jet material with an obstacle produces a bow-like shock within the jet in which particles can be accelerated up to relativistic energies and emit high-energy photons. In this work, we explore the active galactic nuclei scenario, focusing on the dynamical and radiative consequences of the interaction at different jet heights. We find that the produced high-energy emission could be detectable by the current γ-ray telescopes. In general, the jet-clump interactions are a possible mechanism to produce (steady or flaring) high-energy emission in many astrophysical sources in which jets are present.

Keywords

galaxies: activeradiation mechanisms: nonthermal
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S275: Jets at all Scales , September 2010 , pp. 131 - 135
Copyright
Copyright © International Astronomical Union 2011

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