Seismology of solar spicules based on Hinode/SOT observations

We analyze the time series of Ca ii H-line obtained from Hinode/SOT on the solar limb. The time-distance analysis shows that the axis of spicule undergoes quasi-periodic transverse displacement. We determined the period of transverse displacement as ~40-150 s and the mean amplitude as ~ 0.1-0.5 arcs...

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Bibliographic Details
Published in:arXiv.org 2015-07
Main Authors: Abbasvand, V, Ebadi, H, Fazel, Z
Format: Article
Language:English
Subjects:
Field strength
Helioseismology
Seismology
Solar limb
Solar spicules
Spicules
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Summary:We analyze the time series of Ca ii H-line obtained from Hinode/SOT on the solar limb. The time-distance analysis shows that the axis of spicule undergoes quasi-periodic transverse displacement. We determined the period of transverse displacement as ~40-150 s and the mean amplitude as ~ 0.1-0.5 arcsec. For the oscillation wavelength of \(\lambda\) ~ 1/0.06 arcsec ~ 11500 km, the estimated kink speed is ~ 13-83 km/s. We obtained the magnetic field strength in spicules as B_0 = 2 - 12.5 G and the energy flux as 7 - 227 J/m^-2s.
ISSN:2331-8422