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Published August 1, 1976 | Published
Journal Article Open

Kelvin-Helmholtz Instability of Relativistic Beams

Abstract

A discussion of the linearized Kelvin–Helmholtz instability in the vicinity of a plane infinite vortex sheet separating two fluids in relative motion is presented. The calculation generalizes existing treatments to include relativistic relative motion and relativistic internal sound speeds. The character of the unstable modes is outlined in the two limits (a) when the sound speed ratio is large, and (b) when it is equal to unity. The relevance of these results to beam models of extragalactic radio sources is briefly discussed.

Additional Information

© 1976 Royal Astronomical Society. Provided by the NASA Astrophysics Data System. (Received 1976 February 12; in original form 1976 January 20) We thank M. Begelman, B. J. T. Jones and M. J. Rees for advice. A similar treatment of this problem has been presented by B. D. Turland and P. A. G. Scheuer. We thank them for discussing their results in advance of publication.

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August 19, 2023
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October 20, 2023