26 citations · 79 across the 9 of their papers we have counts for
9 papers
Challan: Solar Full-disk Imaging-Spectroscopic Telescope using the Drift-Scanning Technique
Heesu Yang, Maria S. Madjarska, Donguk Song +7
The Challan instrument is a solar full-disk imaging spectroscopic telescope planned to be installed at three sites with a 120-degree longitudinal difference, enabling continuous 24…
Coronal Abundance Fractionation Linked to Chromospheric Transverse MHD Waves in a Solar Active Region Observed with FISS/GST and EIS/Hinode
Kyoung-Sun Lee, Jongchul Chae, Hannah Kwak +5
Elemental abundances in the solar corona differ from those in the photosphere, with low first ionization potential (FIP) elements being enhanced, a phenomenon known as the FIP effe…
The chromospheric component of coronal bright points. Coronal and chromospheric responses to magnetic-flux emergence
Maria S. Madjarska, Jongchul Chae, Fernando Moreno-Insertis +5
We investigate the chromospheric counterpart of small-scale coronal loops constituting a coronal bright point (CBP) and its response to a photospheric magnetic-flux increase accomp…
Impulsive wave excitation by rapidly changing granules
Hannah Kwak, Jongchul Chae, Maria S. Madjarska +2
It is not yet fully understood how magnetohydrodynamic waves in the interior and atmosphere of the Sun are excited. Traditionally, turbulent convection in the interior is considere…
Inference of chromospheric plasma parameters on the Sun
Jongchul Chae, Maria S. Madjarska, Hannah Kwak +1
The solar chromosphere can be observed well through strong absorption lines. We infer the physical parameters of chromospheric plasmas from these lines using a multilayer spectral…
The Physical Nature of Spiral Wave Patterns in Sunspots
Juhyung Kang, Jongchul Chae, Valery M. Nakariakov +3
Recently, spiral wave patterns (SWPs) have been detected in 3 minute oscillations of sunspot umbrae, but the nature of this phenomenon has remained elusive. We present a theoretica…
Three-minute Sunspot Oscillations Driven by Magnetic Reconnection in a Light Bridge
Donguk Song, Jongchul Chae, Hannah Kwak +5
We report a different type of three-minute chromospheric oscillations above a sunspot in association with a small-scale impulsive event in a light bridge. During our observations,…
Chromospheric Plasma Ejections in a Light Bridge of a Sunspot
Donguk Song, Jongchul Chae, Vasyl Yurchyshyn +5
It is well-known that light bridges inside a sunspot produce small-scale plasma ejections and transient brightenings in the chromosphere, but the nature and origin of such phenomen…
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…