Small-scale dynamo magnetism as the driver for heating the solar atmosphere

Tahar Amari (), Jean-François Luciani and Jean-Jacques Aly
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Tahar Amari: Centre de Physique Théorique, Ecole Polytechnique, CNRS
Jean-François Luciani: Centre de Physique Théorique, Ecole Polytechnique, CNRS
Jean-Jacques Aly: AIM – Unité Mixte de Recherche CEA – CNRS – Université Paris VII, UMR no. 7158, Centre d’Etudes de Saclay

Nature, 2015, vol. 522, issue 7555, 188-191

Abstract: A model of the heating of the quiet Sun, in which magnetic fields are generated by a subphotospheric fluid dynamo intrinsically connected to granulation, shows fields expanding into the chromosphere, where plasma is heated at the rate required to match observations by small-scale eruptions that release magnetic energy and drive sonic motions, while the corona is heated by the dissipation of Alfvén waves.

Date: 2015
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DOI: 10.1038/nature14478

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