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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2007, Volume 85, Issue 5, Pages 288–293
(Mi jetpl985)
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This article is cited in 5 scientific papers (total in 5 papers)
PLASMA, GASES
Strong space plasma magnetic barriers and Alfvénic collapse
E. A. Kuznetsovab, S. Savinb, E. Amatac, M. Dunlopd, Y. Khotyaintseve, L. M. Zelenyib, E. V. Panovf, J. Büchnerf, S. Romanovb, J. Bleckig, J. L. Rauchh, B. Nikutowskif a L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences
b Space Research Institute, Russian Academy of Sciences
c Istituto di Fisica dello Spazio Interplanetario, INAF, 00133 Roma, Italy
d Space Science and Technology Department, Rutherford
Appleton Laboratory, OX110QX Chilton, UK
e Swedish Institute of Space Physics, 75121 Uppsala, Sweden
f Max Planck Institut für Sonnensystemforschung, 37191 Katlenburg-Lindau, Germany
g Space Research Centre, Polish Academy of Sciences, Warsaw, 00716 Poland
h Laboratoire de Physique et Chimie de l'Environnement, CNRS, Orléans, 45071 France
Abstract:
We propose to interpret high-magnitude magnetic barriers in space and solar plasma as due to pile-up of magnetic field lines and their Alfvénic collapse for MHD flows. The analysis of experimental data of both Interball and Cluster spacecrafts shows that high-magnitude magnetic structures found in the Earth magnetosheath and near the magnetopause are supported by a nearly thermal transverse plasma flow, with the minimum barrier width being of the order of the ion gyroradius. The collapse termination at such scales can be explained by the balance between pile-up of magnetic field lines and backward finite-gyroradius diffusion. Intercomparison of the theory, modeling and experimental data points out that the Alfvénic collapse is in general a promising mechanism for magnetic field generation and plasma separation.
Received: 07.09.2006 Revised: 07.02.2007
Citation:
E. A. Kuznetsov, S. Savin, E. Amata, M. Dunlop, Y. Khotyaintsev, L. M. Zelenyi, E. V. Panov, J. Büchner, S. Romanov, J. Blecki, J. L. Rauch, B. Nikutowski, “Strong space plasma magnetic barriers and Alfvénic collapse”, Pis'ma v Zh. Èksper. Teoret. Fiz., 85:5 (2007), 288–293; JETP Letters, 85:5 (2007), 236–241
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https://www.mathnet.ru/eng/jetpl985 https://www.mathnet.ru/eng/jetpl/v85/i5/p288
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Abstract page: | 236 | Full-text PDF : | 58 | References: | 51 |
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