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Collisionless Rayle...
Collisionless Rayleigh–Taylor-like instability of the boundary between a hot pair plasma and an electron–proton plasma : The undular mode
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- Dieckmann, Mark E, 1969- (author)
- Linköpings universitet,Medie- och Informationsteknik,Tekniska fakulteten,Scientific Visualization
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- Falk, Martin, Dr.rer.nat. 1981- (author)
- Linköpings universitet,Medie- och Informationsteknik,Tekniska fakulteten,Scientific Visualization
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- Folini, Doris (author)
- Ecole Normale Supérieure, Lyon, CRAL, UMR CNRS 5574, Université de Lyon, 69622 Lyon, France
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- Walder, Rolf (author)
- Ecole Normale Supérieure, Lyon, CRAL, UMR CNRS 5574, Université de Lyon, 69622 Lyon, France
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- Steneteg, Peter, 1981- (author)
- Linköpings universitet,Medie- och Informationsteknik,Tekniska fakulteten,Scientific visualization
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- Hotz, Ingrid, Professor, 1967- (author)
- Linköpings universitet,Medie- och Informationsteknik,Tekniska fakulteten,Scientific Visualization
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- Ynnerman, Anders, 1963- (author)
- Linköpings universitet,Medie- och Informationsteknik,Tekniska fakulteten,Scientific Visualization
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(creator_code:org_t)
- American Institute of Physics (AIP), 2020
- 2020
- English.
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In: Physics of Plasmas. - : American Institute of Physics (AIP). - 1070-664X .- 1089-7674. ; 27:11, s. 1-14
- Related links:
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https://liu.diva-por... (primary) (Raw object)
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https://aip.scitatio...
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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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- We study with a two-dimensional particle-in-cell simulation the stability of a discontinuity or piston, which separates an electron–positron cloud from a cooler electron–proton plasma. Such a piston might be present in the relativistic jets of accreting black holes separating the jet material from the surrounding ambient plasma and when pair clouds form during an x-ray flare and expand into the plasma of the accretion disk corona. We inject a pair plasma at a simulation boundary with a mildly relativistic temperature and mean speed. It flows across a spatially uniform electron–proton plasma, which is permeated by a background magnetic field. The magnetic field is aligned with one simulation direction and oriented orthogonally to the mean velocity vector of the pair cloud. The expanding pair cloud expels the magnetic field and piles it up at its front. It is amplified to a value large enough to trap ambient electrons. The current of the trapped electrons, which is carried with the expanding cloud front, drives an electric field that accelerates protons. A solitary wave grows and changes into a piston after it saturated. Our simulations show that this piston undergoes a collisionless instability similar to a Rayleigh–Taylor instability. The undular mode grows and we observe fingers in the proton density distribution. The effect of the instability is to deform the piston but it cannot destroy it.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Keyword
- PIC simulation
- collisionless plasma
- shock
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Dieckmann, Mark ...
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Falk, Martin, Dr ...
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Folini, Doris
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Walder, Rolf
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Steneteg, Peter, ...
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Hotz, Ingrid, Pr ...
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show more...
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Ynnerman, Anders ...
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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 ...
- Articles in the publication
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Physics of Plasm ...
- By the university
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Linköping University