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Downstream high-speed plasma jet generation as a direct consequence of shock reformation

Author

Listed:
  • Savvas Raptis

    (Division of Space and Plasma Physics - KTH Royal Institute of Technology)

  • Tomas Karlsson

    (Division of Space and Plasma Physics - KTH Royal Institute of Technology)

  • Andris Vaivads

    (Division of Space and Plasma Physics - KTH Royal Institute of Technology)

  • Craig Pollock

    (Denali Scientific)

  • Ferdinand Plaschke

    (Technische Universität Braunschweig
    Space Research Institute, Austrian Academy of Sciences)

  • Andreas Johlander

    (University of Helsinki
    Swedish Institute of Space Physics)

  • Henriette Trollvik

    (Division of Space and Plasma Physics - KTH Royal Institute of Technology)

  • Per-Arne Lindqvist

    (Division of Space and Plasma Physics - KTH Royal Institute of Technology)

Abstract

Shocks are one of nature’s most powerful particle accelerators and have been connected to relativistic electron acceleration and cosmic rays. Upstream shock observations include wave generation, wave-particle interactions and magnetic compressive structures, while at the shock and downstream, particle acceleration, magnetic reconnection and plasma jets can be observed. Here, using Magnetospheric Multiscale (MMS) we show in-situ evidence of high-speed downstream flows (jets) generated at the Earth’s bow shock as a direct consequence of shock reformation. Jets are observed downstream due to a combined effect of upstream plasma wave evolution and an ongoing reformation cycle of the bow shock. This generation process can also be applicable to planetary and astrophysical plasmas where collisionless shocks are commonly found.

Suggested Citation

  • Savvas Raptis & Tomas Karlsson & Andris Vaivads & Craig Pollock & Ferdinand Plaschke & Andreas Johlander & Henriette Trollvik & Per-Arne Lindqvist, 2022. "Downstream high-speed plasma jet generation as a direct consequence of shock reformation," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-28110-4
    DOI: 10.1038/s41467-022-28110-4
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