| Autor: |
Contadakis, M. E., Avgoloupis, S. J., Seiradakis, J. H. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2006, Vol. 848 Issue 1, p324-332, 9p, 1 Chart, 13 Graphs |
| Abstrakt: |
In this paper we present the results of the analysis of the U-light curve for a flare of magnitude 1.2, which was observed on September 2004, with the help of the 30-inch Cassegrain telescope of the Stephanion Observatory. The results of both, DFT-analysis and wavelet analysis, indicate that (a) Oscillations with period 1 to 1.5min, 11s, 7.5s and 5.5s appear during the pre-flare state and persist during the whole flare state, (b) From the flare maximum phase on, a progressive increase of oscillations with periods 20s up to 4.0s is markedly indicated and (c) At the end of the flare only the oscillation of the pre-flare state do remain. This result is in favour of (or does not contradict) the suggested explanation, i.e. the evolution of a fast mode magneto-acoustic wave generated at the impulsive phase of the flare and traveling through the magnetic loop. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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