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Ehsan Tavabi   Submitted: 2008-01-30 01:00

We looked at the temporal behavior of intensity variations of spicules and macro-spicules observed at the solar limb by TRACE (transition region and coronal explorer) EUV telescope in the 1600 Å channel. Using wavelet analysis technique we got evidence of spicule oscillations. The timefrequency analysis provided by the wavelet analysis shows a temporal behavior of spicules with recurrences at periods of about 240 s with a typical lifetime of 10 min. Finally, we shortly discuss two scenarios regarding the possible origin of spicule oscillations.

Authors: A. Ajabshirizadeh, E. Tavabi, S. Koutchmy
Projects: TRACE

Publication Status: new Astronomy(published)
Last Modified: 2008-01-30 09:37
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Subject will be restored when possible  

Ehsan Tavabi   Submitted: 2008-01-30 00:57

We looked at the temporal behavior of intensity variations of spicules and macro-spicules observed at the solar limb by TRACE (transition region and coronal explorer) EUV telescope in the 1600A ˚ channel. Using wavelet analysis technique we got evidence of spicule oscillations. The time?frequency analysis provided by the wavelet analysis shows a temporal behavior of spicules with recurrences at periods of about 210?260 s with a typical lifetime of 10 min. Finally, we shortly discuss two scenarios regarding the possible origin of spicule oscillations.

Authors: A. Ajabshirizadeh, E. Tavabi, S. Koutchmy
Projects: None

Publication Status: new Astronomy(published)
Last Modified: 2008-01-30 00:57
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Subject will be restored when possible  

Ehsan Tavabi   Submitted: 2008-01-30 00:57

We looked at the temporal behavior of intensity variations of spicules and macro-spicules observed at the solar limb by TRACE (transition region and coronal explorer) EUV telescope in the 1600A ˚ channel. Using wavelet analysis technique we got evidence of spicule oscillations. The time?frequency analysis provided by the wavelet analysis shows a temporal behavior of spicules with recurrences at periods of about 210?260 s with a typical lifetime of 10 min. Finally, we shortly discuss two scenarios regarding the possible origin of spicule oscillations.

Authors: A. Ajabshirizadeh, E. Tavabi, S. Koutchmy
Projects: TRACE

Publication Status: new Astronomy(published)
Last Modified: 2008-01-30 00:57
Go to main E-Print page  Edit Entry  Delete Entry 

Subject will be restored when possible  

Ehsan Tavabi   Submitted: 2008-01-29 23:48

We looked at the temporal behavior of intensity variations of spicules and macro-spicules observed at the solar limb by TRACE (transition region and coronal explorer) EUV telescope in the 1600A ˚ channel. Using wavelet analysis technique we got evidence of spicule oscillations. The time?frequency analysis provided by the wavelet analysis shows a temporal behavior of spicules with recurrences at periods of about 210?260 s with a typical lifetime of 10 min. Finally, we shortly discuss two scenarios regarding the possible origin of spicule oscillations.

Authors: A. Ajabshirizadeh, E. Tavabi, S. Koutchmy
Projects: TRACE

Publication Status: published in new Astronomy
Last Modified: 2008-01-29 23:48
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