Arbitrary-order Hilbert Spectral Analysis and Intermittency in Solar Wind Density Fluctuations

  title={Arbitrary-order Hilbert Spectral Analysis and Intermittency in Solar Wind Density Fluctuations},
  author={Francesco Carbone and Luca Sorriso-Valvo and Tommaso Alberti and Fabio Lepreti and Christopher H. K. Chen and Zdeněk Něme{\vc}ek and Jana {\vS}afr{\'a}nkov{\'a}},
  journal={The Astrophysical Journal},
The properties of inertial- and kinetic-range solar wind turbulence have been investigated with the arbitrary-order Hilbert spectral analysis method, applied to high-resolution density measurements. Due to the small sample size and to the presence of strong nonstationary behavior and large-scale structures, the classical analysis in terms of structure functions may prove to be unsuccessful in detecting the power-law behavior in the inertial range, and may underestimate the scaling exponents… 

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