Model for vortex turbulence with discontinuities in the solar wind
A model of vortex with embedded discontinuities in plasma flow is developed in the framework of ideal MHD in a low <font face='Symbol'>b</font> plasma. Vortex structures are considered as a result of 2-D evolution of nonlinear shear Alfvén waves in the heliosphere. Physical...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2003-01-01
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| Series: | Nonlinear Processes in Geophysics |
| Online Access: | http://www.nonlin-processes-geophys.net/10/335/2003/npg-10-335-2003.pdf |
| _version_ | 1818603696130359296 |
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| author | O. P. Verkhoglyadova O. P. Verkhoglyadova B. Dasgupta B. T. Tsurutani |
| author_facet | O. P. Verkhoglyadova O. P. Verkhoglyadova B. Dasgupta B. T. Tsurutani |
| author_sort | O. P. Verkhoglyadova |
| collection | DOAJ |
| description | A model of vortex with embedded discontinuities in plasma flow is developed in the framework of ideal MHD in a low <font face='Symbol'>b</font> plasma. Vortex structures are considered as a result of 2-D evolution of nonlinear shear Alfvén waves in the heliosphere. Physical properties of the solutions and vector fields are analyzed and the observational aspects of the model are discussed. The ratio of normal components to the discontinuity B<sub>r</sub> /V<sub>r </sub>can be close to -2. The alignment between velocity and magnetic field vectors takes place. Spacecraft crossing such vortices will typically observe a pair of discontinuities, but with dissimilar properties. Occurrence rate for different discontinuity types is estimated and agrees with observations in high-speed solar wind stream. Discontinuity crossing provides a backward rotation of magnetic field vector and can be observed as part of a backward arc. The Ulysses magnetometer data obtained in the fast solar wind are compared with the results of theoretical modelling. |
| first_indexed | 2024-12-16T13:27:16Z |
| format | Article |
| id | doaj.art-2cc9050a708f43429f57e9609bdc95e7 |
| institution | Directory Open Access Journal |
| issn | 1023-5809 1607-7946 |
| language | English |
| last_indexed | 2024-12-16T13:27:16Z |
| publishDate | 2003-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Nonlinear Processes in Geophysics |
| spelling | doaj.art-2cc9050a708f43429f57e9609bdc95e72022-12-21T22:30:11ZengCopernicus PublicationsNonlinear Processes in Geophysics1023-58091607-79462003-01-01104/5335343Model for vortex turbulence with discontinuities in the solar windO. P. VerkhoglyadovaO. P. VerkhoglyadovaB. DasguptaB. T. TsurutaniA model of vortex with embedded discontinuities in plasma flow is developed in the framework of ideal MHD in a low <font face='Symbol'>b</font> plasma. Vortex structures are considered as a result of 2-D evolution of nonlinear shear Alfvén waves in the heliosphere. Physical properties of the solutions and vector fields are analyzed and the observational aspects of the model are discussed. The ratio of normal components to the discontinuity B<sub>r</sub> /V<sub>r </sub>can be close to -2. The alignment between velocity and magnetic field vectors takes place. Spacecraft crossing such vortices will typically observe a pair of discontinuities, but with dissimilar properties. Occurrence rate for different discontinuity types is estimated and agrees with observations in high-speed solar wind stream. Discontinuity crossing provides a backward rotation of magnetic field vector and can be observed as part of a backward arc. The Ulysses magnetometer data obtained in the fast solar wind are compared with the results of theoretical modelling.http://www.nonlin-processes-geophys.net/10/335/2003/npg-10-335-2003.pdf |
| spellingShingle | O. P. Verkhoglyadova O. P. Verkhoglyadova B. Dasgupta B. T. Tsurutani Model for vortex turbulence with discontinuities in the solar wind Nonlinear Processes in Geophysics |
| title | Model for vortex turbulence with discontinuities in the solar wind |
| title_full | Model for vortex turbulence with discontinuities in the solar wind |
| title_fullStr | Model for vortex turbulence with discontinuities in the solar wind |
| title_full_unstemmed | Model for vortex turbulence with discontinuities in the solar wind |
| title_short | Model for vortex turbulence with discontinuities in the solar wind |
| title_sort | model for vortex turbulence with discontinuities in the solar wind |
| url | http://www.nonlin-processes-geophys.net/10/335/2003/npg-10-335-2003.pdf |
| work_keys_str_mv | AT opverkhoglyadova modelforvortexturbulencewithdiscontinuitiesinthesolarwind AT opverkhoglyadova modelforvortexturbulencewithdiscontinuitiesinthesolarwind AT bdasgupta modelforvortexturbulencewithdiscontinuitiesinthesolarwind AT bttsurutani modelforvortexturbulencewithdiscontinuitiesinthesolarwind |