MHD wave dynamics close to a current sheet

D. Farina, R. Pozzoli, Yu.A. Tsidulko

Research output: Contribution to journalArticle

Abstract

Using the WKB approximation, the propagation of fast magnetoacoustic waves close to a Y-point of a current sheet is analyzed. When the presence of a small (of order ε), uniform magnetic field Bxparallel to the current, with the role of a perturbation, is taken into account, weak chaos of the ray trajectories is found. The properties of the system are then analyzed by means of a mapping of the Poincaré section. It is found that the region of stochasticity for very small ε fills almost the whole phase space, and decreases with increasing ε.
Original languageEnglish
Pages (from-to)138 - 141
Number of pages4
JournalPhysica Scripta
Volume75
Publication statusPublished - 1998
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics

Cite this

Farina, D., Pozzoli, R., & Tsidulko, Y. A. (1998). MHD wave dynamics close to a current sheet. Physica Scripta, 75, 138 - 141.