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The double magnetic tube as a model of coronal loop oscillations

Published online by Cambridge University Press:  14 March 2005

B. B. Mikhalyaev
Affiliation:
Department of Theoretical Physics, Kalmyk State University, Elista, Russia email: [email protected] Present address: Kalmyk State University, 11 Pushkin Street, Elista, 358000 Russia.
A. A. Solov'ev
Affiliation:
Main Astronomical Observatory of Russian Academy of Sciences, Pulkovo, St. Petersburg 196140, Russia email: [email protected]
E. A. Kiritchek
Affiliation:
Department of Theoretical Physics, Kalmyk State University, Elista, Russia email: [email protected]
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The new model of coronal loop in the form of the double magnetic flux tube embedded into the uniform external magnetic field is proposed to explain the coronal oscillations phenomena. We investigate the MHD-waves in the magnetic flux tube, wich consists of the dense hot cylindrical cord surrounded by the co-axial shell. The magnitudes of Alfven and sound speeds in the cord, in the shell and in the environment are $V_{Ai}$, $C_{si}$, $V_{Am}$, $C_{sm}$, $V_{Ae}$, $C_{se}$ correspondingly. Under the coronal conditions we have \[ C_{se}<C_{si}< V_{Ai}<V_{Ae},\\ C_{si}< V_{Am},\ C_{se}<C_{sm}<V_{Am},\\ C_{sm}<V_{Ai}.\]To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Copyright
© 2004 International Astronomical Union