Statistics – Computation
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...156..194z&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 156, no. 1-2, Feb. 1986, p. 194-198.
Statistics
Computation
2
Axisymmetric Flow, Computational Fluid Dynamics, Jet Flow, Kelvin-Helmholtz Instability, Magnetohydrodynamic Stability, Radio Jets (Astronomy), Cascade Flow, Luminosity, Magnetic Fields, Radiation Pressure, Very Long Base Interferometry
Scientific paper
The Kelvin-Helmholtz instabilities in an axisymmetric configuration with a magnetic field are seen to produce a dispersion relation that can be solved using a numerical routine when the wavelengths are shorter than the jet radius. The following questions are answered: Are the helical and flute instabilities more unstable than the pinching instabilities?; Do the parallel and perpendicular magnetic field configurations have any relevant effect?; What are the consequences of radiation pressure fluids that seem to exist at critical situations such as funnels and VLBI jets?; What is the role of the new instabilities in a magnetism dominated turbulent cascade? Conclusions are given, drawn from an analysis of 'top hat' instabilities.
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