48 citations · 294 across the 21 of their papers we have counts for
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On the possibility to probe the flare productivity of an active region on the early stage of emergence
Alexander S. Kutsenko, Valentina I. Abramenko, Olga K. Kutsenko
A long-standing problem is to predict the future flare productivity of an active region (AR) when it is on the stage of early emergence. The aim of this study is to probe two param…
A Catalog of Bipolar Active Regions Violating the Hale Polarity Law, 1989-2018
A. Zhukova, A. Khlystova, V. Abramenko +1
There is no list of bipolar active regions (ARs) with reverse polarity (anti-Hale regions), although statistical investigations of such ARs (bearing the imprint of deep subphotosph…
Analysis of quiet-sun turbulence on the basis of SDO/HMI and Goode Solar Telescope data
Valentina I. Abramenko, Vasyl B. Yurchyshyn
We analysed line-of-sight magnetic fields and magnetic power spectra of an undisturbed photosphere using magnetograms acquired by the Helioseismic and Magnetic Imager (HMI) on-boar…
Rapid Evolution of Type II Spicules Observed in Goode Solar Telescope On-Disk H-alpha Images
Vasyl Yurchyshyn, Wenda Cao, Valentina Abramenko +2
We analyze ground-based chromospheric data acquired at a high temporal cadence of 2 s in wings of the H spectral line using Goode Solar Telescope (GST) operating at the Big Bear…
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…