X-ray emission from stars in the cool half of the Hertzsprung-Russell diagram is generally
attributed to the presence of a magnetic corona that contains plasma at temperatures …

The authors concentrate on observations that show the solar-stellar connection or point to
probable future stellar observations. Contents: 1. Introduction. 2. History of solar and stellar …

We present a study of flare rates, rotation periods, and spectroscopic activity indicators of
125 single stars within 15 parsecs and with masses between 0.1 and 0.3 M⊙ observed …

The first flare on the Sun was observed exactly 150 years ago. During most of the long
history, only secondary effects have been noticed, so flares remained a riddle. Now the …

The Sun's magnetic activity has steadily declined during its main-sequence life. While the
solar photospheric luminosity was about 30% lower 4.6 Gyr ago when the Sun arrived on …

The ultraviolet (UV) emission of stellar flares may have a pivotal role in the habitability of
rocky exoplanets around low-mass stars. Previous studies have used white-light …

ABSTRACT Extreme Ultraviolet Explorer Deep Survey observations of cool stars (spectral
type F to M) have been used to investigate the distribution of coronal flare rates in energy …

Over the last two decades the uninterrupted, high resolution observations of the Sun, from
the excellent range of telescopes aboard many spacecraft complemented with observations …

We have carried out plasma diagnostics of solar flares using soft X-ray (SXR) and
simultaneous microwave observations and have compared the ratio of X-ray to microwave …

Exosat Observatory observations of flare stars pertaining to 25 separate sources are
examined. The Exosat instrumentation is described, and a data sample is presented …