We present results of X-ray spectral and timing analyses of solar-like (spectral types F5–K8) and intermediate-type (B4–F4) Pleiads observed in a 40-ks XMM-Newton EPIC exposure, probing X-ray luminosities (L X) up to a factor 10 fainter than previous studies using the ROSAT PSPC. All 8 solar-like members have " quasi-steady " L X > ∼ 10 29 erg s −1 consistent with the known rotation–activity re...

Context. Observations show that small-amplitude prominence oscillations are usually damped after a few periods. This phenomenon has been theoretically investigated in terms of non-ideal magnetoacoustic waves, non-adiabatic effects being the best candidates to explain the damping in the case of slow modes. Aims. We study the attenuation of non-adiabatic magnetoacoustic waves in a slab prominence...

Solar geoengineering is gaining prominence in climate change debates as an issue worth studying; for some it even a potential future policy option. We argue here against this increasing normalization of solar speculative part the portfolio. contend, particular, that at planetary scale not governable globally inclusive and just manner within current international political system. therefore call...

To understand the formation mechanism of large plumes in solar prominences, we investigate process two such phenomena. We studied dynamic and thermal properties using observations from New Vacuum Solar Telescope, Dynamic Observatory, Terrestrial Relations Observatory-Ahead. find that observed with high-resolution data are quite different previously small-scale plumes. They born at top a promine...