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| EPoS Contribution |
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Launching MHD turbulence in the early phases of circumstellar disk
Natalia S. Dzyurkevich Max-Planck-Institut für Astronomie, Heidelberg, Germany | |
| The freshly formed circumstellar disks are expected to fit into steady-state model of viscous disk evolution. We show why the early phases of the disk are least fitting to these expectations. In this talk/poster we present the results of 3D global MHD simulations of disks. We pay special attention to the poor ionization of the disk interior, coursed by high gas densities and the presence of tiny dust grains. The typical dust-to gas ratio, measured in molecular clouds and assumed for the disk, will lead to the non-steady accretion. In the next stages of disk evolution, the amount of small fluffy grains is significantly reduced and the long-living pressure traps on the edges of the dead zone can be created. Trapping of the solid material on the edges of the dead zone and at the thresholds of ice sublimation is a promising scenario of creating planets in gas-rich disk. | |
| Collaborators: N.J. Turner, JPL, USA H. Klahr, MPIA, Germany Th. Henning, MPIA, Germany |
Key publication
Suggested Session: Early Phases of Disks, Magnetic Fields, Turbulence |