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arXiv · 0712.2664

Collimation and Radiative Deceleration of Jets in TeV AGNs

Amir Levinson·Omer Bromberg
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Abstract

We consider some implications of the rapid X-ray and TeV variability observed in M87 and the TeV blazars. We outline a model for jet focusing and demonstrate that modest radiative cooling can lead to recollimation of a relativistic jet in a nozzle having a very small cross-sectional radius. Such a configuration can produce rapid variability at large distances from the central engine and may explain recent observations of the HST-1 knot in M87. Possible applications of this model to TeV blazars are discussed. We also discuss a scenario for the very rapid TeV flares observed with HESS and MAGIC in some blazars, that accommodates the relatively small Doppler factors inferred from radio observations.

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Amir Levinson, Omer Bromberg. 2007-12-17. Collimation and Radiative Deceleration of Jets in TeV AGNs. https://doi.org/10.1142/s0218271808013200

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