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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional Autónoma de México
2004
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| Online Access: | https://www.redalyc.org/articulo.oa?id=56843111 |
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| _version_ | 1866814301803642880 |
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| author | M. C. López Fuentes |
| author_facet | M. C. López Fuentes |
| contents | Inferring the writhe of magnetic flux tubes from the evolution of active solar regions M. C. López Fuentes C. H. Mandrini P. Démoulin L. van Driel Gesztelyi Ciencias de la Tierra flux tubes Solar active regions emergence of magnetic field We study the long-term evolution of bipolar active regions in which the main polarities are observed to rotate one about theother along several solar rotations. We propose that this peculiar evolution is due to the emergence of distorted magnetic fluxtubes. We are able to infer the sign of the writhe helicity of the flux tubes from the rotation of the axis joining the main positive andnegative polarities. The origin of the deformations may be explained by the development of a kink instability. Another possibilityis the interaction with plasma motions during the ascent of the flux tubes in the Convective Zone. We discuss the role of theCoriolis force, convective turbulence and other large-scale motions in this process. 2004 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56843111 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.43 |
| format | Artículo científico |
| id | redalyc_56843111 |
| language | en |
| publishDate | 2004 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Inferring the writhe of magnetic flux tubes from the evolution of active solar regions M. C. López Fuentes Ciencias de la Tierra flux tubes Solar active regions emergence of magnetic field Inferring the writhe of magnetic flux tubes from the evolution of active solar regions M. C. López Fuentes C. H. Mandrini P. Démoulin L. van Driel Gesztelyi Ciencias de la Tierra flux tubes Solar active regions emergence of magnetic field We study the long-term evolution of bipolar active regions in which the main polarities are observed to rotate one about theother along several solar rotations. We propose that this peculiar evolution is due to the emergence of distorted magnetic fluxtubes. We are able to infer the sign of the writhe helicity of the flux tubes from the rotation of the axis joining the main positive andnegative polarities. The origin of the deformations may be explained by the development of a kink instability. Another possibilityis the interaction with plasma motions during the ascent of the flux tubes in the Convective Zone. We discuss the role of theCoriolis force, convective turbulence and other large-scale motions in this process. 2004 artículo científico 0016-7169 https://www.redalyc.org/articulo.oa?id=56843111 en http://www.redalyc.org/revista.oa?id=568 Geofísica Internacional application/pdf Universidad Nacional Autónoma de México Geofísica Internacional (México) Num.1 Vol.43 |
| title | Inferring the writhe of magnetic flux tubes from the evolution of active solar regions |
| topic | Ciencias de la Tierra flux tubes Solar active regions emergence of magnetic field |
| url | https://www.redalyc.org/articulo.oa?id=56843111 |