Torsional Alfven waves in stratified and expanding magnetic flux tubes

Details Torsional Alfven waves in stratified and expanding magnetic flux tubes Torsional Alfven waves in stratified and expanding magnetic flux tubes

2011-02-08

arxiv.org/abs/1102.1638v1

Astrophys. Space Sci. 333 (2011) 463

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

13 pages, 7 figures, Accepted for publication in Astrophysics and Space Science

Scientific paper

10.1007/s10509-011-0642-9

The effects of both density stratification and magnetic field expansion on torsional Alfven waves in magnetic flux tubes are studied. The frequencies, the period ratio P1/P2 of the fundamental and its first-overtone, and eigenfunctions of torsional Alfven modes are obtained. Our numerical results show that the density stratification and magnetic field expansion have opposite effects on the oscillating properties of torsional Alfven waves.

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