A model of the Io plasma ribbon |
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| Affiliation: | 1. Department of Geophysics, Graduate School of Science, Tohoku University, Sendai, Japan;2. Division for the Establishment of Frontier Sciences of Organization for Advanced Studies, Tohoku University, Sendai, Japan;3. Department of Systems Innovation, School of Engineering, The University of Tokyo, Tokyo, Japan;1. Laboratory for Atmospheric and Space Physics, University of Colorado, 3665 Discovery Dr., Boulder, CO 80303, United States;2. IRAP, University of Toulouse, France;3. Swedish Institute of Space Physics, Sweden;4. NASA, Johnson Space Center, United States;5. National Institute of Aerospace, U.S.;6. NASA, Goddard Space Flight Center, United States;7. Boston University, United States;8. University of Michigan, United States;9. LATMOS/CNRS, France;10. CPI Inc., United States;11. Kansas University, United States;12. SSL, University of California at Berkeley, United States;13. Princeton University, United States;14. Virginia Tech, United States;15. University of Arizona, United States;p. Wright State University, United States;q. JAXA, Japan;r. University of Iowa, United States;s. University of Tokyo, Japan;t. Tohoku University, Japan;u. Analytical Mechanics Associates, United States;v. UCLA, United States;w. Max Planck Inst. Solar System Research, Germany;x. Eastern Michigan University, United States;y. Naval Research Laboratory, United States;z. University of Liege, Belgium;1. George Mason University, United States;2. NASA, Jet Propulsion Laboratory, United States;3. University of New Brunswick, Canada;1. Department of Geophysics, Graduate School of Science, Tohoku University, Sendai, Japan;2. Division for the Establishment of Frontier Sciences, Organization for Advanced Studies, Tohoku University, Sendai, Japan;3. Komaba Institute for Science, Graduate School of Arts and Science, University of Tokyo, Tokyo, Japan;4. Planetary Plasma and Atmospheric Research Center, Tohoku University, Sendai, Japan |
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| Abstract: | ![]()
Using data derived from Earth-based measurements of the Io plasma torus, J.T. Trauger (1984, Science226, 337–341) has recently detected a distinct and sharply defined component of the hot inner torus which describes as “ribbon-like” in structure. We identify this plasma ribbon as the source of density fluctuations which derive outward plasma diffusion in a linearized convection model. The model yields simple expressions involving the thickness of the source ring, a linear dimension of the convection cells, and the exponent in the power law in zenocentric radius which the plasma density satisfies in the source ring. We find that the model is consistent with Trauger's data. |
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