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Generation of axisymmetric magnetosonic shock waves: Applications to static equilibria and accretion disks
Institution:1. Department of Structural and Geotechnical Engineering, Università di Roma La Sapienza, 18 Via Eudossiana, Roma, Italy;2. Doctoral School in Theoretical and Applied Mechanics, Università di Roma La Sapienza, 18 Via Eudossiana, Roma, Italy;3. MeMoCS, International Research Center for the Mathematics & Mechanics of Complex Systems, Università dell?Aquila, Italy;1. International Research Center on Mathematics and Mechanics of Complex Systems, University of L?Aquila, 67100 L?Aquila, Italy;2. Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, Créteil, France;1. Department of Architecture, Chulalongkorn University, Bangkok 10330, Thailand;2. Centre for Infrastructure Engineering and Safety, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia;1. University of Cagliari, DICAAR—Department of Civil and Environmental Engineering and Architecture, via Marengo, 2, I-09123 Cagliari, Italy;2. Intes GmbH, Schulze-Delitzsch-Straße 16, D-70565 Stuttgart, Germany;3. Technische Universität Dresden, Institut Statik und Dynamik der Tragwerke, Schumann-Straße 10, D-01062 Dresden, Germany;4. University of Sassari, DADU—Department of Architecture, Design and Urban Planning, Asilo Sella, via Garibaldi, 35, I-07041 Alghero (SS), Italy
Abstract:Magnetosonic waves traveling in a MHD equilibrium may evolve into shocks. We develop a criterion for the creation of fast shocks in the equatorial plane of axisymmetric equilibria and analyze the influence of the most important parameters. The results are applied to Grad–Shafranov equilibria and accretion disks.
Keywords:Shock waves  Fast magnetosonic waves  MHD equilibria  Accretion disks
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