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 undergos quasi-periodic transverse displacement. We determined the period of transverse displacement as ~ 40 - 150 ± 8 s and the mean amplitude as ~ 0.1 – 0.5 arc sec. For the oscillation wavelength of ? ~ 1/0.06 arc sec ~ 11500 km, the estimated kink speed is ~ 13-83 km s -1. We obtained the magnetic field strength in spicules as B0 = 2 – 12.5 ± 1 G and the energy flux as 7 - 227 Jm -2 s -1.