Some observations suggest that solar spicules show small amplitude and high frequency oscillations of magneto-acoustic waves, which arise from photospheric granular forcing. We apply the method of MHD seismology to determine the period of kink waves. For this purposes, the oscillations of a magnetic cylinder embedded in a field-free environment is investigated. Finally, diagnostic diagrams disp...

Despite being a common feature of the solar chromosphere, spicules are still a poorly understood phenomenon. Not much is known about their impact on the physics of the transition region and corona, for which spicules are believed to be the dominant mechanism for mass injection. We recently observed the spatial plasma structure of polar spicules in a large temperature range with the EUV spectrom...

Recent high-resolution imaging and spectroscopic observations have generated renewed interest in spicules' role explaining the hot corona. Some studies suggest that some spicules, often classified as type II, may provide significant mass energy to Here we use numerical simulations investigate whether such spicules can produce observed coronal emission without any additional heating agent. Model...

High-speed downflows have been observed in the solar transition region (TR) and lower corona for many decades. Despite their abundance, it has hard to find signatures of such chromosphere. In this work, we target an enhanced network that shows ample occurrences rapid spicular \halpha\ spectral line could potentially be linked high-speed TR downflowing counterparts. We used $k$-means algorithm c...

The solar chromosphere is occupied with a wealth of fine structures referred to by diverse nomenclature. Recent identification of slow-mode magnetoacoustic shocks, excited by p-modes of photospheric oscillations, as plausible drivers of dynamic fibrils and spicules was followed by a surge of observational studies and numerical simulations attempting to reveal the role of chromospheric fine stru...

Observations of interstellar gas and dust towards nearby stars and within the solar system show that the Sun is embedded in a warm diffuse partiallyionized cloud. This cloud is the leading edge of a flow of interstellar matter (ISM) through our Galactic neighborhood. Interstellar matter sets the boundary conditions of the heliosphere and astrospheres of extra-solar planetary systems. Moreover, ...