Thanks to dedicated long-term missions like Voyager and GOES over the past 50 years,
much insight has been gained on the activity of our Sun, the solar wind, its interaction with …

Aims. Solar Orbiter, the first mission of ESA's Cosmic Vision 2015–2025 programme and a
mission of international collaboration between ESA and NASA, will explore the Sun and …

Low-mass stars show evidence of vigorous magnetic activity in the form of large flares and
coronal mass ejections. Such space weather events may have important ramifications for the …

We report the latest statistical analyses of superflares on solar-type (G-type main-sequence;
effective temperature is 5100–6000 K) stars using all of the Kepler primary mission data and …

Discovery of frequent superflares on active cool stars opened a new avenue in
understanding the properties of eruptive events and their impact on exoplanetary …

We conducted the time-resolved simultaneous optical spectroscopic and photometric
observations of mid-M-dwarf flare stars YZ CMi, EV Lac, and AD Leo. Spectroscopic …

Context. Stellar flares of active M dwarfs can affect the atmospheric composition of close-
orbiting gas giants, and can result in time-dependent transmission spectra. Aims. We aim to …

Active M-type stars are known to often produce superflares on the surface. Radiation from
stellar (super) flares is important for exoplanet habitability, but the mechanisms are not well …

Upcoming missions, including the James Webb Space Telescope, will soon characterize the
atmospheres of terrestrial-type exoplanets in habitable zones around cool K-and M-type …

Stellar flares sometimes show red/blue asymmetries of the Hα line, which can indicate
chromospheric dynamics and prominence activations. However, the origin of asymmetries is …