Sub-Alfvénic Solar Wind Observed by the Parker Solar Probe: Characterization of Turbulence, Anisotropy, Intermittency, and Switchback

@article{Bandyopadhyay2022SubAlfvnicSW,
  title={Sub-Alfv{\'e}nic Solar Wind Observed by the Parker Solar Probe: Characterization of Turbulence, Anisotropy, Intermittency, and Switchback},
  author={Riddhi Bandyopadhyay and William H. Matthaeus and D. J. Mccomas and Rohit Chhiber and Arcadi V. Usmanov and J. Huang and Roberto Livi and Davin E. Larson and Justin C. Kasper and A. W. Case and Michael Stevens and Phyllis L. Whittlesey and O. M. Romeo and Stuart. D. Bale and John W. Bonnell and Thierry Dudok de Wit and Keith Goetz and Peter R. Harvey and Robert J. Macdowall and David M. Malaspina and Marc P. Pulupa},
  journal={The Astrophysical Journal Letters},
  year={2022},
  volume={926}
}
In the lower solar coronal regions where the magnetic field is dominant, the Alfvén speed is much higher than the wind speed. In contrast, the near-Earth solar wind is strongly super-Alfvénic, i.e., the wind speed greatly exceeds the Alfvén speed. The transition between these regimes is classically described as the “Alfvén point” but may in fact occur in a distributed Alfvén critical region. NASA’s Parker Solar Probe (PSP) mission has entered this region, as it follows a series of orbits that… 

The Turbulent Properties of the Sub-Alfvénic Solar Wind Measured by the Parker Solar Probe

For the first time, Parker Solar Probe (PSP) observed the sub-Alfvénic solar wind where the solar wind bulk speed drops below the local Alfvén speed for an extended period of time. Here, we report on

Turbulence and Waves in the Sub-Alfvénic Solar Wind Observed by the Parker Solar Probe during Encounter 10

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Magnetic Field Intermittency in the Solar Wind: Parker Solar Probe and SolO Observations Ranging from the Alfvén Region up to 1 AU

Parker Solar Probe (PSP) and SolO data are utilized to investigate magnetic field intermittency in the solar wind (SW). Small-scale intermittency (20−100 d i ) is observed to radially strengthen when

Isotropization and Evolution of Energy-containing Eddies in Solar Wind Turbulence: Parker Solar Probe, Helios 1, ACE, WIND, and Voyager 1

We examine the radial evolution of correlation lengths perpendicular ( λC⊥ ) and parallel ( λC∥ ) to the magnetic-field direction, computed from solar wind magnetic-field data measured by Parker

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