The usefulness of Poynting's theorem in magnetic turbulence
arXiv:1709.04741 · doi:10.5194/angeo-35-1353-2017
Abstract
We rewrite Poynting's theorem, already used in a previous publication (Treumann & Baumjohann 2017) to derive relations between the turbulent magnetic and electric power spectral densities, to make explicit where the mechanical contributions enter. We then make explicit use of the relativistic transformation of the turbulent electric fluctuations to obtain expressions which depend only on the magnetic and velocity fluctuations. Any electric fluctuations play just an intermediate role. Equations are constructed for the turbulent conductivity spectrum in Alfvénic and non-Alfvénic turbulence in extension of the results in the above citation. An observation-based discussion of their use in application to solar wind turbulence is given. The inertial range solar wind turbulence exhibits signs of chaos and self-organisation.
arXiv comment8 pages, no figures, Brief communication
References in corpus (13)
- Measurement of the electric fluctuation spectrum of magnetohydrodynamic turbulence
- Universality of solar wind turbulent spectrum from MHD to electron scales
- Solar Wind Turbulence and the Role of Ion Instabilities
- Scaling of the electron dissipation range of solar wind turbulence
- New insight into short wavelength solar wind fluctuations from Vlasov theory
- Density Fluctuation Spectrum of Solar Wind Turbulence between Ion and Electron Scales
- Constraining Low-Frequency Alfvenic Turbulence in the Solar Wind Using Density Fluctuation Measurements
- Frame Dependence of the Electric Field Spectrum of Solar Wind Turbulence
- Spectrum of weak magnetohydrodynamic turbulence
- Power Anisotropy in the Magnetic Field Power Spectral Tensor of Solar Wind Turbulence
- Electron cyclotron maser instability (ECMI) in strong magnetic guide field reconnection
- Inverse scattering problem in turbulent magnetic fluctuations
- Poynting's theorem in magnetic turbulence