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arXiv:0711.4112 (astro-ph)
[Submitted on 26 Nov 2007 (v1), last revised 11 Feb 2008 (this version, v2)]

Title:The power of blazar jets

Authors:A. Celotti (SISSA, Trieste), G. Ghisellini (Oss. Astron. di Brera)
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Abstract: We estimate the power of relativistic, extragalactic jets by modelling the spectral energy distribution of a large number of blazars. We adopt a simple one-zone, homogeneous, leptonic synchrotron and inverse Compton model, taking into account seed photons originating both locally in the jet and externally. The blazars under study have an often dominant high energy component, which, if interpreted as due to inverse Compton radiation, limits the value of the magnetic field within the emission region. As a consequence, the corresponding Poynting flux cannot be energetically dominant. Also the bulk kinetic power in relativistic leptons is often smaller than the dissipated luminosity. This suggests that the typical jet should comprise an energetically dominant proton component. If there is one proton per relativistic electrons, jets radiate around 2-10 per cent of their power in high power blazars and 3-30 per cent in less powerful BL Lacs.
Comments: MNRAS, in press, changed Fig. 5, corrected typos
Subjects: Astrophysics (astro-ph)
Cite as: arXiv:0711.4112 [astro-ph]
  (or arXiv:0711.4112v2 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0711.4112
Related DOI: https://doi.org/10.1111/j.1365-2966.2007.12758.x

Submission history

From: Gabriele Ghisellini [view email]
[v1] Mon, 26 Nov 2007 21:00:26 UTC (270 KB)
[v2] Mon, 11 Feb 2008 11:16:48 UTC (174 KB)
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