26 citations · 229 across the 16 of their papers we have counts for
17 papers
A model of umbral oscillations inherited from subphotospheric fast-body modes
Juhyung Kang, Jongchul Chae, Kyuhyoun Cho +2
Recently, complex horizontal patterns of umbral oscillations have been reported, but their physical nature and origin are still not fully understood. Here we show that the two-dime…
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…
The Balloon-borne Investigation of Temperature and Speed of Electrons in the corona (BITSE): Mission Description and Preliminary Results
N. Gopalswamy, J. Newmark, S. Yashiro +16
We report on the Balloonborne Investigation of Temperature and Speed of Electrons in the corona (BITSE) mission launched recently to observe the solar corona from about 3 Rs to 15…
Detection of Opposite Magnetic Polarity in a Light Bridge: Its Emergence and Cancellation in association with LB Fan-shaped Jets
Eun-Kyung Lim, Heesu Yang, Vasyl Yurchyshyn +3
Light bridges (LBs) are relatively bright structures that divide sunspot umbrae into two or more parts. Chromospheric LBs are known to be associated with various activities includi…
Strong Blue Asymmetry in Hα line as a Preflare Activity
Kyuhyoun Cho, Jeongwoo Lee, Jongchul Chae +5
Chromospheric activities prior to solar flares provide important clues to solar flare initiation, but are as yet poorly understood. We report a significant and rapid H line broa…
Spatial Distribution of Origin of Umbral Waves in a Sunspot Umbra
Vasyl Yurchyshyn, Ali Kilcik, Seray Sahin +2
Umbral flashes (UFs) are emissions in the core of chromospheric lines caused by upward propagating waves steepening into shocks. UFs are followed by an expanding blue shifted umbra…