The Spectrum and Energy Density of Solar Wind Turbulence of Cometary Origin
- Alan Johnstone
Published Online: 26 MAR 2013
Copyright 1991 by the American Geophysical Union.
Cometary Plasma Processes
How to Cite
Johnstone, A. D., Huddleston, D. E. and Coates, A. J. (2013) The Spectrum and Energy Density of Solar Wind Turbulence of Cometary Origin, in Cometary Plasma Processes (ed A. Johnstone), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM061p0259
- Published Online: 26 MAR 2013
- Published Print: 1 JAN 1991
Print ISBN: 9780875900278
Online ISBN: 9781118663660
- Space plasmas;
The spectrum and energy density of solar wind turbulence of cometary origin can be related directly to the development of a bispherical shell distribution from the initial ring distribution of newly created ions. Although quasilinear theory has been very successful in obtaining such relationships we show how the power-law spectrum with an exponent of approximately minus 2 can be derived more simply from energy conservation and the resonant wave interaction characteristics. Observations of both the spectrum and the wave energy density agree well with these theoretical relationships. However the mechanisms by which the wave energy is dissipated are significant and have yet be evaluated.