dorsal/arxiv
View SchemaExperimental observation and characterization of the magnetorotational instability
| Authors | Daniel R. Sisan, Nicolas Mujica, W. Andrew Tillotson, Yi-Min Huang, William Dorland, Adil B. Hassam, Thomas M. Antonsen, Daniel P. Lathrop |
|---|---|
| Categories | |
| ArXiv ID | physics/0402125 |
| URL | https://arxiv.org/abs/physics/0402125 |
| DOI | 10.1103/PhysRevLett.93.114502 |
| Journal | Phys.Rev.Lett. 93 (2004) 114502 |
Abstract
Differential rotation occurs in conducting flows in accretion disks and planetary cores. In such systems, the magnetorotational instability can arise from coupling Lorentz and centrifugal forces to cause large radial angular momentum fluxes. We present the first experimental observation of the magnetorotational instability. Our system consists of liquid sodium between differentially rotating spheres, with an imposed coaxial magnetic field. We characterize the observed patterns, dynamics and torque increases, and establish that this instability can occur from a hydrodynamic turbulent background.
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"abstract": "Differential rotation occurs in conducting flows in accretion disks and\nplanetary cores. In such systems, the magnetorotational instability can arise\nfrom coupling Lorentz and centrifugal forces to cause large radial angular\nmomentum fluxes. We present the first experimental observation of the\nmagnetorotational instability. Our system consists of liquid sodium between\ndifferentially rotating spheres, with an imposed coaxial magnetic field. We\ncharacterize the observed patterns, dynamics and torque increases, and\nestablish that this instability can occur from a hydrodynamic turbulent\nbackground.",
"arxiv_id": "physics/0402125",
"authors": [
"Daniel R. Sisan",
"Nicolas Mujica",
"W. Andrew Tillotson",
"Yi-Min Huang",
"William Dorland",
"Adil B. Hassam",
"Thomas M. Antonsen",
"Daniel P. Lathrop"
],
"categories": [
"physics.flu-dyn",
"astro-ph",
"physics.geo-ph"
],
"doi": "10.1103/PhysRevLett.93.114502",
"journal_ref": "Phys.Rev.Lett. 93 (2004) 114502",
"title": "Experimental observation and characterization of the magnetorotational instability",
"url": "https://arxiv.org/abs/physics/0402125"
},
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