| Autor: |
Pardi, A., Magyar, N., Mocanu, G. R., Marcu, A. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; Nov2013, Vol. 1564 Issue 1, p194-199, 6p, 1 Diagram, 3 Graphs |
| Abstrakt: |
We investigate the propagation of both sausage and kink modes channelled by expanding coronal loops, with time-dependent, inhomogeneous density. The aim of this paper is to extend the study of the effects of loop cooling and expansion on standing sausage modes. We follow a linearized magnetohydrodynamical (MHD) approach in deriving the laws of motion for the coronal loops, and due to the complexity of the obtained equations, the solutions are found numerically. It was found that the cooling phenomenon leads to the damping of both kink and sausage type oscillations. On the other hand, the expansion of the loop alters mainly the period of the oscillations. This study may found possible application in the field of Coronal Seismology. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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