13 citations · 17 across the 5 of their papers we have counts for
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Statistical Study of Appearance Timing of H Postflare Loops: Simple Scaling Law Based on Radiative Cooling
Takato Otsu, Ayumi Asai, Kai Ikuta +1
Recent Sun-as-a-star studies have shown that postflare loops can manifest as a secondary peak in the H light curve, suggesting that stellar postflare loops are detectable. To un…
Sun-as-a-star Analysis of the X1.6 Flare on 2023 August 5: Dynamics of Post-flare Loops in Spatially Integrated Observational Data
Takato Otsu, Ayumi Asai, Kai Ikuta +1
Post-flare loops are loop-like plasmas observed during the decay phase of solar flares, and they are expected to exist for stellar flares. However, it is unclear how post-flare loo…
A fast-filament eruption observed in the H spectral line. I. Imaging spectroscopy diagnostic
Denis P. Cabezas, Kiyoshi Ichimoto, Ayumi Asai +4
Context. Solar filament eruptions usually appear to occur in association with the sudden explosive release of magnetic energy accumulated in long-lived arched magnetic structures.…
Thermodynamic properties of small flares in the quiet Sun observed by H and EUV: plasma motion of the chromosphere and time evolution of temperature/emission measure
Yuji Kotani, Takako T. Ishii, Daiki Yamasaki +4
Small flares frequently occur in the quiet Sun. Previous studies have noted that they share many common characteristics with typical solar flares in active regions. However, their…
Unified Relationship between Cold Plasma Ejections and Flare Energies Ranging from Solar Microflares to Giant Stellar Flares
Yuji Kotani, Kazunari Shibata, Takako T. Ishii +4
We often find spectral signatures of chromospheric cold plasma ejections accompanied by flares in a wide range of spatial scales in the solar and stellar atmospheres. However, the…