379 11 2010 1 5451 document 2010 A&A_Vasil_Kukhianidze_2006_kink_Waves.pdf application/pdf ce9e77defcbf28a50ef34729456db705 MD5 100641 2014-01-23 13:15:31 http://eprints.iliauni.edu.ge/379/1/A%26A_Vasil_Kukhianidze_2006_kink_Waves.pdf 379 1 1 application/pdf text en public

A&A_Vasil_Kukhianidze_2006_kink_Waves.pdf

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http://eprints.org/relation/isVersionOf http://eprints.iliauni.edu.ge/id/document/2010 http://eprints.org/relation/isVolatileVersionOf http://eprints.iliauni.edu.ge/id/document/2010 http://eprints.org/relation/ismediumThumbnailVersionOf http://eprints.iliauni.edu.ge/id/document/2010 2014 2 5459 document 2014 small.jpg image/png 78a10dca2418d702845b63611392d6ec MD5 1797 2014-01-23 13:25:42 http://eprints.iliauni.edu.ge/379/5/small.jpg 379 5 5 image/png other Thumbnails conversion from text to thumbnail_small ge public

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http://eprints.org/relation/isVersionOf http://eprints.iliauni.edu.ge/id/document/2010 http://eprints.org/relation/isVolatileVersionOf http://eprints.iliauni.edu.ge/id/document/2010 http://eprints.org/relation/issmallThumbnailVersionOf http://eprints.iliauni.edu.ge/id/document/2010 archive 134 disk0/00/00/03/79 2014-01-23 19:22:22 2015-03-27 10:03:51 2014-01-23 19:22:22 article show Kukhianidze V. vasil.kukhianidze@iliauni.edu.ge Zaqarashvili T. Khutsishvili E. pub QB public Sun: chromosphere, Sun: oscillations Height series of Hα spectra in solar limb spicules obtained with the 53 cm coronagraph of the Abastumani Astrophysical Observatory are analyzed. Each height series covered 8 different heights beginning at 3800 km above the photosphere. The spatial difference between neighboring heights was 1'', consequently ~3800-8700 km distance above the photosphere has been covered. The total time duration of each height series was 7 s. We found that nearly 20% of measured height series show a periodic spatial distribution of Doppler velocities. We suggest that this spatial periodicity in Doppler velocity is caused by propagating kink waves in spicules. The wave length is found to be ~3500 km. However the wave length tends to be ~1000 km at the photosphere due to the height variation of the kink speed. This probably indicates to a granular origin for the waves. The period of waves is estimated to be in the range of 35-70 s. These waves may carry photospheric energy into the corona, therefore can be of importance in coronal heating. 2006-04-02 published Astronomy & Astrophysics 449 2 EDP Sciences 35-38 10.1051/0004-6361:200600018 TRUE