Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...415..691b&link_type=abstract
Astronomy and Astrophysics, v.415, p.691-703 (2004)
Astronomy and Astrophysics
Astrophysics
4
Plasmas, Sun: Solar Wind, Waves, Magnetic Fields, Ism: Jets And Outflow
Scientific paper
The propagation of linear compressional waves is studied in magnetic flux tubes. The plasma inside and outside the tube is considered to be rarefied which confers an anisotropic character to the plasma. The anisotropy appears at different temperatures for parallel and perpendicular directions relative to the ambient magnetic field. The theoretical results are applied to study the effects of anisotropy and equilibrium steady flow on wave propagation in structures such as coronal plumes, the geomagnetic tail and anisotropic astrophysical jets. The obtained results show that the internal and/or external anisotropy has a very important effect on the propagation of linear compressional waves. The presence of a steady equilibrium flow in certain applications can change dramatically the propagation of the modes.
Ballai Istvan
Marcu Alexandru
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