Magnetohydrodynamic (MHD) turbulence in radio galaxies

Details Magnetohydrodynamic (MHD) turbulence in radio galaxies Magnetohydrodynamic (MHD) turbulence in radio galaxies

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.207..243z&link_type=abstract

In ESA Plasma Astrophys. p 243-246 (SEE N85-22270 12-90)

Mathematics

Logic

Kelvin-Helmholtz Instability, Magnetohydrodynamic Turbulence, Radio Galaxies, Turbulence Effects, Electron Photon Cascades, Luminosity, Mach Number

Scientific paper

The efficiency of turbulence produced by large hydrodynamic instabilities such as Kelvin-Helmholtz and internal shear to make radio jets shine is investigated. Assuming that most of the power of a turbulent cascade is absorbed by radiating particles, the contribution of hydrodynamic instabilities to the luminosity is deduced. The efficiency of the turbulent cascade is very sensitive to the variation of the Mach number and this could explain the morphological differences between low luminosity sources with supersonic flow and high luminosity sources with hypersonic flow. The theoretical luminosity derived is applied to a sample of extragalactic radio sources.

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