Author:
Bicknell Geoffrey V.,Wagner Stefan J.
Abstract
AbstractWe consider the shock structures that can arise in blazar jets as a consequence of variations in the jet flow velocity. There are two possible cases: (1) a double shock system consisting of both a forward and reverse shock, and (2) a single shock (either forward or reverse) together with a rarefaction wave. These possibilities depend upon the relative velocity of the two different sections of jet. Using previously calculated spherical models for estimates of the magnetic field and electron number density of the emission region in the TeV blazar Mkn 501, we show that this region is in the form of a thin disk in the plasma rest frame. It is possible to reconcile spectral and pair opacity constraints for Mkn 501 for Doppler factors in the range of 10–20. This is easiest if the corrections for TeV absorption by the infrared background are not as large as implied by recent models.
Publisher
Cambridge University Press (CUP)
Subject
Space and Planetary Science,Astronomy and Astrophysics
Reference16 articles.
1. Bicknell G. V. , Wagner S. J. , & Groves B. A. 2001, in The Oxford Radio Galaxy Workshop, ASP Conference Series 250, eds R. A. Laing, & K. Blundell (San Francisco: ASP), 80
2. Jet Stability and the Generation of Superluminal and Stationary Components
3. The M87 jet: internal shocks in a plasma beam?
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