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Manfred Cuntz

Evolution of Solar-Type Activity: An Observational and Theoretical Perspective

(Volume 93 - Année 2024 — No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation)
DOI: 10.25518/0037-9565.11950
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Abstract

When stars depart from the main-sequence, various changes occur including the loss of angular momentum owing to changes in the stellar interior and the impact of stellar winds. These processes affect the amount of outer atmospheric heating and emission as revealed by observations in the UV and X-ray spectral regimes. From a theoretical perspective, both magnetic and acoustic energy generation are affected as indicated by detailed theoretical simulations. Here, I will summarize selected observational and theoretical results, including recent work for β Hydri (G2 IV), a star constituting a prime example and proxy for the future Sun.

Keywords : stars: activity, stars: individual: β Hydri, stars: magnetic fields, stars: chromospheres, stars: coronae, Sun: evolution

To cite this article

Manfred Cuntz, «Evolution of Solar-Type Activity: An Observational and Theoretical Perspective», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 93 - Année 2024, No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation, 1018-1028 URL : http://popups.ulg.be/0037-9565/index.php?id=11950.

About: Manfred Cuntz

Department of Physics, University of Texas at Arlington, Arlington, TX 76019, USA. Correspondence to: cuntz@uta.edu