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Energy transfer of imbalanced Alfvénic turbulence in the heliosphere

Author

Listed:
  • Liping Yang

    (Chinese Academy of Sciences)

  • Jiansen He

    (Peking University)

  • Daniel Verscharen

    (University College London)

  • Hui Li

    (Los Alamos National Laboratory)

  • Trevor A. Bowen

    (University of California)

  • Stuart D. Bale

    (University of California
    University of California)

  • Honghong Wu

    (Wuhan University)

  • Wenya Li

    (Chinese Academy of Sciences)

  • Ying Wang

    (Peking University)

  • Lei Zhang

    (China Academy of Aerospace Science and Innovation)

  • Xueshang Feng

    (Chinese Academy of Sciences)

  • Ziqi Wu

    (Peking University)

Abstract

Imbalanced Alfvénic turbulence is a universal process playing a crucial role in energy transfer in space, astrophysical, and laboratory plasmas. A fundamental and long-lasting question about the imbalanced Alfvénic turbulence is how and through which mechanism the energy transfers between scales. Here, we show that the energy transfer of imbalanced Alfvénic turbulence is completed by coherent interactions between Alfvén waves and co-propagating anomalous fluctuations. These anomalous fluctuations are generated by nonlinear couplings instead of linear reflection. We also reveal that the energy transfer of the waves and the anomalous fluctuations is carried out mainly through local-scale and large-scale nonlinear interactions, respectively, responsible for their bifurcated power-law spectra. This work unveils the energy transfer physics of imbalanced Alfvénic turbulence, and advances the understanding of imbalanced Alfvénic turbulence observed by Parker Solar Probe in the inner heliosphere.

Suggested Citation

  • Liping Yang & Jiansen He & Daniel Verscharen & Hui Li & Trevor A. Bowen & Stuart D. Bale & Honghong Wu & Wenya Li & Ying Wang & Lei Zhang & Xueshang Feng & Ziqi Wu, 2023. "Energy transfer of imbalanced Alfvénic turbulence in the heliosphere," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-43273-4
    DOI: 10.1038/s41467-023-43273-4
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    1. S. D. Bale & S. T. Badman & J. W. Bonnell & T. A. Bowen & D. Burgess & A. W. Case & C. A. Cattell & B. D. G. Chandran & C. C. Chaston & C. H. K. Chen & J. F. Drake & T. Dudok Wit & J. P. Eastwood & R., 2019. "Highly structured slow solar wind emerging from an equatorial coronal hole," Nature, Nature, vol. 576(7786), pages 237-242, December.
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