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Electron Signatures...
Electron Signatures of Reconnection in a Global eVlasiator Simulation
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- Alho, M. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Battarbee, M. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Pfau-Kempf, Y. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Khotyaintsev, Yuri V. (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Nakamura, R. (author)
- Austrian Acad Sci, Space Res Inst, Linz, Austria.
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- Cozzani, G. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Ganse, U. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Turc, L. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Johlander, A. (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen,Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Horaites, K. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Tarvus, V (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Zhou, H. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Grandin, M. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Dubart, M. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Papadakis, K. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Suni, J. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- George, H. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Bussov, M. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.
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- Palmroth, M. (author)
- Univ Helsinki, Dept Phys, Helsinki, Finland.;Finnish Meteorol Inst, Helsinki, Finland.
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Univ Helsinki, Dept Phys, Helsinki, Finland Institutet för rymdfysik, Uppsalaavdelningen (creator_code:org_t)
- American Geophysical Union (AGU), 2022
- 2022
- English.
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In: Geophysical Research Letters. - : American Geophysical Union (AGU). - 0094-8276 .- 1944-8007. ; 49:14
- Related links:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Geospace plasma simulations have progressed toward more realistic descriptions of the solar wind-magnetosphere interaction from magnetohydrodynamic to hybrid ion-kinetic, such as the state-of-the-art Vlasiator model. Despite computational advances, electron scales have been out of reach in a global setting. eVlasiator, a novel Vlasiator submodule, shows for the first time how electromagnetic fields driven by global hybrid-ion kinetics influence electrons, resulting in kinetic signatures. We analyze simulated electron distributions associated with reconnection sites and compare them with Magnetospheric Multiscale (MMS) spacecraft observations. Comparison with MMS shows that key electron features, such as reconnection inflows, heated outflows, flat-top distributions, and bidirectional streaming, are in remarkable agreement. Thus, we show that many reconnection-related features can be reproduced despite strongly truncated electron physics and an ion-scale spatial resolution. Ion-scale dynamics and ion-driven magnetic fields are shown to be significantly responsible for the environment that produces electron dynamics observed by spacecraft in near-Earth plasmas.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)
Keyword
- kinetic simulation
- reconnection
- electron distribution function
- magnetosphere
- vlasov equation
- electric field
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Alho, M.
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Battarbee, M.
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Pfau-Kempf, Y.
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Khotyaintsev, Yu ...
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Nakamura, R.
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Cozzani, G.
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show more...
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Ganse, U.
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Turc, L.
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Johlander, A.
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Horaites, K.
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Tarvus, V
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Zhou, H.
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Grandin, M.
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Dubart, M.
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Papadakis, K.
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Suni, J.
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George, H.
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Bussov, M.
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Palmroth, M.
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- About the subject
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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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NATURAL SCIENCES
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and Earth and Relate ...
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and Geophysics
- Articles in the publication
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Geophysical Rese ...
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Uppsala University