Details

Autor(en) / Beteiligte

• Schekochihin, A
• Cowley, S
• Dorland, W
• Hammett, G
• Howes, G
• Quataert, E
• Tatsuno, T
• Yousef, T

Titel

Gyrokinetic theory and simulations of the turbulence in the solar wind

Ist Teil von

• Geophysical research abstracts, 2007-01

Erscheinungsjahr

2007

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• I will outline gyrokinetics and argue that it is both the most promising and physically appropriate theoretical framework for studying the magnetised plasma turbulence in the solar wind - both in the inertial and dissipation ranges. I will introduce the concept of kinetic cascade and show how the more familiar cascades of Alfven waves, density fluctuations, kinetic Alfven waves etc. fit into the correct unified theoretical description. I will also present preliminary results of gyrokinetic and hybrid fluid-kinetic simulations of the turbulence in the solar wind. They are succesful in capturing the main observed features: the Kolmogorov scaling in the inertial range, the spectral break around the ion gyroscale, the secondary cascade in the dissipation range, etc.