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 basic mechanisms responsible for producing winds from cool, late-type stars are still
largely unknown. We take inspiration from recent progress in understanding solar wind …

The maximum amplitude (A max) of spot-induced brightness variations from long-term V-
band photometry and the ratio LX/L bol between X-ray and bolometric luminosities are …

Context. Solar simulations and observations show that the detection of long-period Earth-
like planets is expected to be very difficult with radial velocity techniques in the solar case …

Context. We investigate the wave heating problem of a solar quiet region and present its
plausible solution without involving shock formation. Aims. We aim to use numerical …

Despite numerous observational and theoretical attempts, the heating problem of the solar
chromosphere still remains unsolved. We develop a novel 3D two-fluid model that accounts …

A calibration of Hα as both a chromospheric diagnostic and an age indicator is presented,
complementing the works previously done on this subject ([CITE];[CITE]). The …

Context. We need to establish a correspondence between the magnetic structures
generated by models and usual stellar activity indexes to simulate radial velocity time series …

The familiar decadal cycle of solar activity is one expression of interannual variability of
surface magnetism observed in stars on or near the lower main sequence. From studies of …

We introduce a novel technique, called the double wavelet analysis (DWA), for the
determination of stellar rotation periods from time serial data. This first paper aims narrowly …