19 citations · 38 across the 4 of their papers we have counts for
5 papers
On the Nature of Propagating Intensity Disturbances in Polar Plumes during the 2017 Total Solar Eclipse
Kyung-Suk Cho, Il-Hyun Cho, Maria S. Madjarska +8
The propagating intensity disturbances (PIDs) in plumes are still poorly understood and their identity (magnetoacoustic waves or flows) remains an open question. We investigate PID…
A New Type of Jets in a Polar Limb of Solar Coronal Hole
Il-Hyun Cho, Yong-Jae Moon, Kyung-Suk Cho +3
A new type of chromospheric jets in a polar limb of a coronal hole is discovered in the Ca II filtergram of the Solar Optical Telescope on board the \textit{Hinode}. We identify 30…
Non-equilibrium ionization effects on solar EUV and X-ray imaging observations
Jin-Yi Lee, John C. Raymond, Katharine K. Reeves +3
During transient events such as major solar eruptions, the plasma can be far from the equilibrium ionization state because of rapid heating or cooling. Non-equilibrium ionization~(…
Seismological determination of the Alfvén speed and plasma-beta in solar photospheric bright points
Il-Hyun Cho, Yong-Jae Moon, Valery M. Nakariakov +7
The Alfvén speed and plasma beta in photospheric bright points observed by the Broadband Filter Imager (BFI) of the Solar Optical Telescope (SOT) on board the \textit{Hinode} satel…
Oscillatory Response of the Solar Chromosphere to a Strong Downflow above a Sunspot
Hannah Kwak, Jongchul Chae, Donguk Song +3
We report three-minute oscillations in the solar chromosphere driven by a strong downflow event in a sunspot. We used the Fast Imaging Solar Spectrograph of the 1.6 m New Solar Tel…