Spicules Intensity Oscillations in SOT/HINODE Observations

Abstract

Aims. We study the coherency of solar spicules intensity oscillations with increasing height above the solar limb in quiet Sun, active Sun and active region using observations from HINODE/SOT. Existence of coherency up to transition region strengthens the theory of the coronal heating and solar wind through energy transport and photospheric oscillations. Methods. Using time sequences from the HINODE/SOT in Ca II H line, we investigate oscillations found in intensity profiles at different heights above the solar limb. We use the Fourier and wavelet analysis to measure dominant frequency peaks of intensity at the heights, and phase difference between oscillations at two certain heights, to find evidence for the coherency of the oscillations. Finally, we can calculate the energy and the mass transported by spicules providing energy equilibrium, according to density values of spicules at different heights. To extend this work, we can also consider coherent oscillations at different latitudes and suggest to study of oscillations which may be obtained from observations of other satellites.

arXiv comment17 pages and 17 figs., Accepted in JOAA

References in corpus (9)

• A Tale Of Two Spicules: The Impact of Spicules on the Magnetic Chromosphere
• Dynamic Fibrils are driven by Magnetoacoustic Shocks
• Oscillations and waves in solar spicules
• Magnetic Rossby waves in the solar tachocline and Rieger-type periodicities
• Nonlinear propagation of Alfven waves driven by observed photospheric motions: Application to the coronal heating and spicule formation
• A Statistical Analysis of the SOT-Hinode Observations of Solar Spicules and their Wave-like Behavior
• Increasing the Fine Structure Visibility of the Hinode SOT Ca II H Filtergrams
• Nature of Quiet Sun Oscillations Using Data from the Hinode, TRACE, and SOHO Spacecraft
• Power spectrum analysis of limb and disk spicule using Hinode Ca H line broadband filter

Cited by in corpus (2)

• Evidence for Energy Supply by Active Region Spicules to the Solar Atmosphere
• Evidence for coherent spicule oscillations by correcting Hinode/SOT Ca II H in the southeast limb of the Sun