Publications by authors named "Petr Hellinger"
We investigate spectral properties of turbulence in the solar wind that is a weakly collisional astrophysical plasma, accessible to in situ observations. Using the Helios search coil magnetometer measurements in the fast solar wind, in the inner heliosphere, we focus on properties of the turbulent magnetic fluctuations at scales smaller than the ion characteristic scales, the so-called kinetic plasma turbulence. At such small scales, we show that magnetic power spectra between 0.
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- The study estimates the turbulent energy-cascade rate using a third-order law from Hall-magnetohydrodynamics (MHD) and analyzes both Hall and MHD contributions to energy flux.
- By comparing Magnetospheric Multiscale (MMS) data from the magnetosheath and solar wind with simulation results, researchers confirm that MMS observations show a clear inertial range at large MHD scales, primarily influenced by the MHD flux.
- The findings reveal that even at smaller scales, the MHD contribution to energy transfer is more significant than previously believed, with the Hall term's role becoming more pronounced in high plasma beta conditions.