Switchbacks in the near-Sun magnetic field: long memory and impact on the turbulence cascade

Abstract

One of the most striking observations made by Parker Solar Probe during its first solar encounter is the omnipresence of rapid polarity reversals in a magnetic field that is otherwise mostly radial. These so-called switchbacks strongly affect the dynamics of the magnetic field. We concentrate here on their macroscopic properties. First, we find that these structures are self-similar, and have neither a characteristic magnitude, nor a characteristic duration. Their waiting time statistics shows evidence for aggregation. The associated long memory resides in their occurrence rate, and is not inherent to the background fluctuations. Interestingly, the spectral properties of inertial range turbulence differ inside and outside of switchback structures; in the latter the $1/f$ range extends to higher frequencies. These results suggest that outside of these structures we are in the presence of lower amplitude fluctuations with a shorter turbulent inertial range. We conjecture that these correspond to a pristine solar wind.

arXiv comment10 figures, to appear in The Astrophysical Journal Supplement Series (2020)

References in corpus (16)

• Surrogate time series
• Detecting Long-range Correlations with Detrended Fluctuation Analysis
• The Evolution and Role of Solar Wind Turbulence in the Inner Heliosphere
• 25 Years of Self-Organized Criticality: Solar and Astrophysics
• Magnetic connectivity of the ecliptic plane within 0.5 AU : PFSS modeling of the first PSP encounter
• Ion Scale Electromagnetic Waves in the Inner Heliosphere
• Magnetic field kinks and folds in the solar wind
• A transonic collisionless model of the solar wind
• Wind reversals in turbulent Rayleigh-Benard convection
• Flow reversal in a simple dynamical model of turbulence
• Cross Helicity Reversals In Magnetic Switchbacks
• On the 1/f spectrum in the solar wind and its connection with magnetic compressibility
• Statistics and Polarization of Type III Radio Bursts Observed in the Inner Heliosphere
• Wavelet transforms and their applications to MHD and plasma turbulence: a review
• Anomalous diffusion in random dynamical systems
• Plasma Waves near the Electron Cyclotron Frequency in the near-Sun Solar Wind

Cited by in corpus (110)

• The Solar Orbiter mission -- Science overview
• The Evolution and Role of Solar Wind Turbulence in the Inner Heliosphere
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• Features of magnetic field switchbacks in relation to the local-field geometry of large-amplitude Alfvénic oscillations: \emph{Wind} and \emph{PSP} observations
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