The transformation of magnetoacoustic waves into Alfvén waves inside the magnetosphere
A mechanism for the transformation of a magnetoacoustic wave into an Alfvén wave is proposed. During the compression of the magnetosphere by the solar wind the inner edge of the plasma sheet and the contours of <i>B</i>=const move in different ways. In the case of asymmet...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
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| Series: | Annales Geophysicae |
| Online Access: | http://www.ann-geophys.net/12/1022/1994/angeo-12-1022-1994.html |
| _version_ | 1828740054056435712 |
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| author | W. B. Lyatsky V. V. Safargaleev A. E. Kozlovsky |
| author_facet | W. B. Lyatsky V. V. Safargaleev A. E. Kozlovsky |
| author_sort | W. B. Lyatsky |
| collection | DOAJ |
| description | A mechanism for the transformation of a magnetoacoustic wave into an Alfvén wave is proposed. During the compression of the magnetosphere by the solar wind the inner edge of the plasma sheet and the contours of <i>B</i>=const move in different ways. In the case of asymmetrical compression, the contours of <i>B</i>=const will cross the inner edge of the plasma sheet. To close the drift currents - that flow in the plasma sheet along the contours of <i>B</i>=const - the appearance of the field-aligned currents is necessary. This appearance corresponds to the generation of the Alfvén wave. |
| first_indexed | 2024-04-13T00:33:30Z |
| format | Article |
| id | doaj.art-7ae7a628be63472b91f3698ec2206282 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-04-13T00:33:30Z |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-7ae7a628be63472b91f3698ec22062822022-12-22T03:10:24ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05761210/1110221026The transformation of magnetoacoustic waves into Alfvén waves inside the magnetosphereW. B. LyatskyV. V. SafargaleevA. E. KozlovskyA mechanism for the transformation of a magnetoacoustic wave into an Alfvén wave is proposed. During the compression of the magnetosphere by the solar wind the inner edge of the plasma sheet and the contours of <i>B</i>=const move in different ways. In the case of asymmetrical compression, the contours of <i>B</i>=const will cross the inner edge of the plasma sheet. To close the drift currents - that flow in the plasma sheet along the contours of <i>B</i>=const - the appearance of the field-aligned currents is necessary. This appearance corresponds to the generation of the Alfvén wave.http://www.ann-geophys.net/12/1022/1994/angeo-12-1022-1994.html |
| spellingShingle | W. B. Lyatsky V. V. Safargaleev A. E. Kozlovsky The transformation of magnetoacoustic waves into Alfvén waves inside the magnetosphere Annales Geophysicae |
| title | The transformation of magnetoacoustic waves into Alfvén waves inside the magnetosphere |
| title_full | The transformation of magnetoacoustic waves into Alfvén waves inside the magnetosphere |
| title_fullStr | The transformation of magnetoacoustic waves into Alfvén waves inside the magnetosphere |
| title_full_unstemmed | The transformation of magnetoacoustic waves into Alfvén waves inside the magnetosphere |
| title_short | The transformation of magnetoacoustic waves into Alfvén waves inside the magnetosphere |
| title_sort | transformation of magnetoacoustic waves into alfven waves inside the magnetosphere |
| url | http://www.ann-geophys.net/12/1022/1994/angeo-12-1022-1994.html |
| work_keys_str_mv | AT wblyatsky thetransformationofmagnetoacousticwavesintoalfvenwavesinsidethemagnetosphere AT vvsafargaleev thetransformationofmagnetoacousticwavesintoalfvenwavesinsidethemagnetosphere AT aekozlovsky thetransformationofmagnetoacousticwavesintoalfvenwavesinsidethemagnetosphere AT wblyatsky transformationofmagnetoacousticwavesintoalfvenwavesinsidethemagnetosphere AT vvsafargaleev transformationofmagnetoacousticwavesintoalfvenwavesinsidethemagnetosphere AT aekozlovsky transformationofmagnetoacousticwavesintoalfvenwavesinsidethemagnetosphere |