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| EPoS Contribution |
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A resolution of the magnetic braking catastrophe during the second collapse
Wolf B. Dapp The University of Western Ontario, London, Canada | |
| We perform axisymmetric non-ideal MHD simulations of the gravitational collapse of an isolated, rotating, low-mass prestellar core. Our models include magnetic braking and one or both of ambipolar diffusion and ohmic dissipation. We integrate through the 'second-collapse' phase all the way to a stellar-sized object using a barotropic equation of state. We quantify conditions under which a centrifugally-supported disk can form, and show that this happens very close to the YSO. We find that significant radial flux loss can hamper magnetic braking sufficiently to allow a disk to form. We conclude that the resolution of the 'magnetic braking catastrophe' is found at very small scales. | |
| Collaborators: S. Basu, UWO, Canada |
Key publication
Suggested Session: Magnetic Fields, Cores and Collapse, Early Phases of Disks |