Articles | Volume 40, issue 6
https://doi.org/10.5194/angeo-40-687-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-40-687-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
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15 Dec 2022
Regular paper | Highlight paper |
| 15 Dec 2022
| 15 Dec 2022
Solar wind magnetic holes can cross the bow shock and enter the magnetosheath
Division of Space and Plasma Physics, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, Sweden
Henriette Trollvik
Division of Space and Plasma Physics, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, Sweden
Savvas Raptis
Division of Space and Plasma Physics, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, Sweden
Hans Nilsson
Swedish Institute of Space Physics, Kiruna, Sweden
Hadi Madanian
Laboratory for Atmospheric and Space Physics, Boulder, Colorado, USA
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Magnetosheath jets are high-velocity features within the Earth's turbulent magnetosheath, separating the Earth's magnetic domain from the solar wind. The characteristics of the jets are difficult to assess statistically as a function of their lifetime because normally spacecraft observe them only at one position within the magnetosheath. This study first confirms the accuracy of the model used, Vlasiator, by comparing it to MMS spacecraft, and then carries out the first jet lifetime statistics.
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Editor-in-chief
This study identifies magnetic holes in the solar wind and in the terrestrial magnetosheath through multipoint magnetic field and plasma measurements by the Cluster mission. The observations show that the magnetic holes can penetrate the bow shock and enter the magnetosheath. The study suggests that
the solar wind magnetic holes may also interact with the magnetopause, representing a new type of localised solar wind-magnetosphere interaction.
This study identifies magnetic holes in the solar wind and in the terrestrial magnetosheath...
Short summary
Magnetic holes are curious localized dropouts of magnetic field strength in the solar wind (the flow of ionized gas continuously streaming out from the sun). In this paper we show that these magnetic holes can cross the bow shock (where the solar wind brake down to subsonic velocity) and enter the region close to Earth’s magnetosphere. These structures may therefore represent a new type of non-uniform solar wind–magnetosphere interaction.
Magnetic holes are curious localized dropouts of magnetic field strength in the solar wind (the...
