Shear flow induced wave couplings in the solar wind

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A sheared background flow in a plasma induces coupling between different MHD wave modes, resulting in their mutual transformations with corresponding energy redistributing between the modes. In this way, the energy can be transfered from one wave mode to the other, but energy can also be added to or extracted from the background flow. In the present paper it is investigated whether the wave coupling and energy transfer mechanisms can operate under solar wind conditions. It is shown that this is indeed the case. Hence, the long-period waves observed in the solar wind at r > 0.3 AU might be ... continued below

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27 p.

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Poedts, S.; Rogava, A.D. & Mahajan, S.M. January 1, 1998.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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  • Poedts, S. KULeuven, Heverlee (Belgium). Centre for Plasma Astrophysics
  • Rogava, A.D. International Centre for Theoretical Physics, Trieste (Italy)
  • Mahajan, S.M. Univ. of Texas, Austin, TX (United States). Institute for Fusion Studies

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Description

A sheared background flow in a plasma induces coupling between different MHD wave modes, resulting in their mutual transformations with corresponding energy redistributing between the modes. In this way, the energy can be transfered from one wave mode to the other, but energy can also be added to or extracted from the background flow. In the present paper it is investigated whether the wave coupling and energy transfer mechanisms can operate under solar wind conditions. It is shown that this is indeed the case. Hence, the long-period waves observed in the solar wind at r > 0.3 AU might be generated by much faster periodic oscillations in the photosphere of the Sun. Other possible consequences for observable beat phenomena in the wind and the acceleration of the solar wind particles are also discussed.

Physical Description

27 p.

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OSTI as DE98004204

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  • Other Information: PBD: Jan 1998

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  • Other: DE98004204
  • Report No.: DOE/ER/54346--807
  • Grant Number: FG03-96ER54346
  • DOI: 10.2172/582279 | External Link
  • Office of Scientific & Technical Information Report Number: 582279
  • Archival Resource Key: ark:/67531/metadc695311

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  • January 1, 1998

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  • Aug. 14, 2015, 8:43 a.m.

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  • Aug. 10, 2016, 2:15 p.m.

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Poedts, S.; Rogava, A.D. & Mahajan, S.M. Shear flow induced wave couplings in the solar wind, report, January 1, 1998; Austin, Texas. (digital.library.unt.edu/ark:/67531/metadc695311/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.