27 citations · 70 across the 7 of their papers we have counts for
7 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…
Accelerating and Supersonic Density Fluctuations in Coronal Hole Plumes: Signature of Nascent Solar Winds
Il-Hyun Cho, Valery M. Nakariakov, Yong-Jae Moon +5
Slow magnetoacoustic waves in a static background provide a seismological tool to probe the solar atmosphere in the analytic frame. By analyzing the spatiotemporal variation of the…
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…
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…
2D solar wind speeds from 6 to 26 solar radii in solar cycle 24 by using Fourier filtering
Il-Hyun Cho, Yong-Jae Moon, Valery M. Nakariakov +5
Measurement of the solar wind speed near the Sun is important for understanding the acceleration mechanism of the solar wind. In this study, we determine 2D solar wind speeds from…
Changes in Sea-Level Pressure over South Korea Associated with High-Speed Solar Wind Events
Il-Hyun Cho, Young-Sil Kwak, Katsuhide Marubashi +3
We explore a possibility that the daily sea-level pressure (SLP) over South Korea responds to the high-speed solar wind event. This is of interest in two aspects: First, if there i…
Dependence of GCRs influx on the Solar North-South Asymmetry
Il-Hyun Cho, Young-Sil Kwak, Heon-Young Chang +3
We investigate the dependence of the amount of the observed galactic cosmic ray (GCR) influx on the solar North-South asymmetry using the neutron count rates obtained from four sta…