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Transmission of for...
Transmission of foreshock waves through Earth's bow shock
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- Turc, L. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Roberts, O. W. (author)
- Austrian Acad Sci, Space Res Inst, Graz, Austria.
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- Verscharen, D. (author)
- Univ Coll London, Mullard Space Sci Lab, Dorking, Surrey, England.
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- Dimmock, Andrew P. (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Kajdic, P. (author)
- Univ Nacl Autonoma Mexico, Dept Ciencias Espaciales, Inst Geofis, Mexico City, Mexico.
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- Palmroth, M. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.;Finnish Meteorol Inst, Helsinki, Finland.
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- Pfau-Kempf, Y. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Johlander, Andreas, 1990- (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Dubart, M. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Kilpua, E. K. J. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Soucek, J. (author)
- Czech Acad Sci, Inst Atmospher Phys, Prague, Czech Republic.
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- Takahashi, K. (author)
- Johns Hopkins Univ Appl Phys Lab, Laurel, MD USA.
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- Takahashi, N. (author)
- Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Tokyo, Japan.;Radio Res Inst, Natl Inst Informat & Commun Technol, Tokyo, Japan.
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- Battarbee, M. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Ganse, U. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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Univ Helsinki, Dept Phys, Helsinki, Finland Austrian Acad Sci, Space Res Inst, Graz, Austria. (creator_code:org_t)
- 2022-12-19
- 2023
- English.
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In: Nature Physics. - : Springer Nature. - 1745-2473 .- 1745-2481. ; 19:1, s. 78-86
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Abstract
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- The Earth's magnetosphere and its bow shock, which is formed by the interaction of the supersonic solar wind with the terrestrial magnetic field, constitute a rich natural laboratory enabling in situ investigations of universal plasma processes. Under suitable interplanetary magnetic field conditions, a foreshock with intense wave activity forms upstream of the bow shock. So-called 30 s waves, named after their typical period at Earth, are the dominant wave mode in the foreshock and play an important role in modulating the shape of the shock front and affect particle reflection at the shock. These waves are also observed inside the magnetosphere and down to the Earth's surface, but how they are transmitted through the bow shock remains unknown. By combining state-of-the-art global numerical simulations and spacecraft observations, we demonstrate that the interaction of foreshock waves with the shock generates earthward-propagating, fast-mode waves, which reach the magnetosphere. These findings give crucial insight into the interaction of waves with collisionless shocks in general and their impact on the downstream medium.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
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- ref (subject category)
- art (subject category)
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- By the author/editor
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Turc, L.
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Roberts, O. W.
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Verscharen, D.
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Dimmock, Andrew ...
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Kajdic, P.
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Palmroth, M.
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Pfau-Kempf, Y.
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Johlander, Andre ...
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Dubart, M.
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Kilpua, E. K. J.
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Soucek, J.
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Takahashi, K.
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Takahashi, N.
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Battarbee, M.
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Ganse, U.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Fusion Plasma an ...
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NATURAL SCIENCES
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and Astronomy Astrop ...
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Nature Physics
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Uppsala University