AP ASTRA Proceedings AP ASTRA Proc. 2199-3963 Copernicus Publications Göttingen, Germany 10.5194/ap-1-19-2014 Incorporating magnetic field observations in wind models of low-mass stars Vidotto A. A. 1 2 School of Physics & Astronomy, Univ. of St Andrews, North Haugh, St Andrews, KY16 9SS, UK Observatoire de Genève, Univ. de Genève, Ch. des Maillettes 51, Versoix, 1290, Switzerland 06 06 2014 1 19 22 Copyright: © 2014 A. A. Vidotto 2014 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://ap.copernicus.org/articles/1/19/2014/ap-1-19-2014.html The full text article is available as a PDF file from https://ap.copernicus.org/articles/1/19/2014/ap-1-19-2014.pdf

Stellar winds of cool, main-sequence stars are very tenuous and difficult to observe. Despite carrying away only a small amount of the stellar mass, they are important for regulating the rotation of the star and, consequently, its activity and magnetism. As it permeates the interplanetary space, the stellar wind interacts with any exoplanet encountered on its way, until it reaches the interstellar medium (ISM). These interactions can result in complex physical processes that depend on the characteristics of the wind. To better constrain the wind characteristics, more realistic wind models that account for factors such as stellar rotation and the complex/diverse observationally-derived stellar magnetic field configurations of cool stars are required. In this paper, I present a three-dimensional model of the wind of cool stars, which adopt as boundary condition observationally-derived magnetic maps. I also discuss how these studies are relevant for, e.g., the characterisation of the interaction between stellar winds and planets/ISM, and the propagation of cosmic rays.

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