Linear magnetohydrodynamic waves in a finely stratified plasma (Articolo in rivista)

Type
Label
  • Linear magnetohydrodynamic waves in a finely stratified plasma (Articolo in rivista) (literal)
Anno
  • 2000-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevE.61.3069 (literal)
Alternative label
  • Enzo Lazzaro (1), Maurizio Lontano (1), and Dmitri D. Ryutov (2) (2000)
    Linear magnetohydrodynamic waves in a finely stratified plasma
    in Physical review. E, Statistical, nonlinear and soft matter physics (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Enzo Lazzaro (1), Maurizio Lontano (1), and Dmitri D. Ryutov (2) (literal)
Pagina inizio
  • 3069 (literal)
Pagina fine
  • 3077 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://pre.aps.org/abstract/PRE/v61/i3/p3069_1 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 61 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Istituto di Fisica del Plasma \"Piero Caldirola,\" Consiglio Nazionale delle Ricerche, EURATOM-ENEA-CNR Association, Via R. Cozzi 53, 20125 Milano, Italy (2) Lawrence Livermore National Laboratory, Livermore, California 94551 (literal)
Titolo
  • Linear magnetohydrodynamic waves in a finely stratified plasma (literal)
Abstract
  • In a number of astrophysical systems, the magnetic field, instead of varying over a scale comparable with the \"natural'' scale of the object (e.g., tens of thousands of kilometers in the case of the solar convective zone), varies over lengths that are orders of magnitude less than this (e.g., over distances down to 100 km in the case of the magnetic filaments detected in the upper part of the solar convective zone and probably present in much deeper layers). Therefore, the study of the propagation of magnetohydrodynamic (MHD) waves in plasmas with fine magnetic nonuniformities is of considerable general importance for astrophysics. We have developed a general formalism that allows one to treat the propagation of large-scale MHD waves in a finely stratified medium. We demonstrate that the presence of a fine structure of the plasma may produce considerable modifications of the modes existing in a uniform plasma, with a number of propagation modes that may even increase. We also show that the slow MHD mode may experience a collisionless damping, which causes the wave energy to be converted into the energy of the peristaltic modes of the plasma \"resonant'' layers. (literal)
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