Magnetically Driven Supersonic Plasma Jets in High Energy Density Experiments
| Autor: | F. Suzuki-Vidal, S. V. Lebedev, A. Ciardi, S. N. Bland, J. P. Chittenden, G. N. Hall, A. Harvey-Thomson, A. Marocchino, A. Frank, E. G. Blackman, C. Stehle, M. Camenzind, Giuseppe Bertin, Franca De Luca, Giuseppe Lodato, Roberto Pozzoli, Massimiliano Romé |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Physics
magnetic tower jets Supermassive black hole Jet (fluid) protostars Astrophysics::High Energy Astrophysical Phenomena yso jet Plasma Astrophysics Pulsed power jet-ambient interaction z-pinch Astrophysical jet Z-pinch Physics::Accelerator Physics Protostar Supersonic speed Astrophysics::Galaxy Astrophysics |
| Popis: | Collimated outflows (jets) are ubiquitous in the universe, appearing around sources as diverse as protostars and extragalactic supermassive black holes. Jets are thought to be magnetically collimated, and launched from a magnetized accretion disk surrounding a compact gravitating object. We have developed the first laboratory experiment to address time‐dependent, episodic phenomena relevant to the poorly understood jet acceleration and collimation region [1]. The experiments were performed on the MAGPIE pulsed power facility (1.5 MA, 250 ns) at Imperial College. The experimental results show the periodic ejections of magnetic bubbles naturally evolving into a heterogeneous jet propagating inside a channel made of self‐collimated magnetic cavities. The results provide a unique view of the possible transition from a relatively steady‐state jet launching to the observed highly structured outflows. |
| Databáze: | OpenAIRE |
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