Discovered an X-ray cycle in a 400 million years old star. The study: “An X-ray activity cycle on the young solar-like star ɛ Eridani” of M. Coffaro (Eberhard-Karls Universität Tübingen) appeared on A&A
The intensity of Solar magnetic activity and of the related phenomena (such as sunspots and flares) varies with an 11-years cycle. In order to understand whether such an activity cycle is common among solar-type stars, since 1966 a project based on the Observatory of Mt. Wilson is collecting measurements of the cromospheric activity of a large sample of low-mass stars
» Read more