Conferencia
Dasso, S.; Mandrini, C.H.; Luoni, M.L.; Gulisano, A.M.; Nakwacki, M.S.; Pohjolainen, S.; Van Driel-Gesztelyi, L.; Démoulin, P. "Linking coronal to heliospheric magnetic helicity: A new model-independent technique to compute helicity in magnetic clouds" (2005) Solar Wind 11/SOHO 16 - Connecting Sun and Heliosphere(592):605-608
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Abstract:
Magnetic clouds (MCs) are a subset of interplanetary coronal mass ejections (ICMEs), which carry a significant amount of large scale magnetic helicity (MH) away from the solar corona as they travel to the external heliosphere. From a theoretical point of view, it is expected that MH be preserved in the solar corona and the heliosphere. In particular, it will be preserved in MCs during their evolution through the interplanetary medium. Thus, MH plays a key role to link the magnetic properties of MCs with their solar active region (AR) sources, helping us to improve the knowledge of the ejection mechanisms in the corona. MH studies permit also to restrict the various models proposed to represent the structure of clouds. We present here a new method to compute the MH in clouds, which provides values for the helicity per unit length along the flux tube axis using the observed interplanetary magnetic field. The method only assumes that the cloud section is circular. We apply this method to two MCs, one of the biggest and one of the smallest ever observed, and compare our results with the helicity ejected from their respective solar sources.
Registro:
| Documento: | Conferencia |
| Título: | Linking coronal to heliospheric magnetic helicity: A new model-independent technique to compute helicity in magnetic clouds |
| Autor: | Dasso, S.; Mandrini, C.H.; Luoni, M.L.; Gulisano, A.M.; Nakwacki, M.S.; Pohjolainen, S.; Van Driel-Gesztelyi, L.; Démoulin, P. |
| Ciudad: | Whistler |
| Filiación: | Institute de Astronomía y Física Del Espacio, CONICET-UBA, CC. 67, Suc. 28, 1428 Buenos Aires, Argentina Departamento de Física, Facultad de Ciencias Exactas y Naturales, PBI, 1428 Buenos Aires, Argentina Tuorla Observatory, VISPA, University of Turku, FIN-21500 Piikkiö, Finland Observatoire de Paris, LESIA, UMR 8109 (CNRS), F-92195, Meudon, France Mullard Space Science Laboratory, Univ. College London, Dorking, Surrey, RH5 6NT, United Kingdom Konkoly Observatory, P.O. Box 67, H-1525 Budapest, Hungary |
| Palabras clave: | Magnetic clouds; Magnetic helicity; Solar ejections; Magnetic fields; Planets; Solar radiation; Magnetic clouds; Magnetic helicity; Solar ejections; Magnetic properties |
| Año: | 2005 |
| Número: | 592 |
| Página de inicio: | 605 |
| Página de fin: | 608 |
| Título revista: | Solar Wind 11/SOHO 16 - Connecting Sun and Heliosphere |
| Título revista abreviado: | Eur Space Agency Spec Publ ESA SP |
| ISSN: | 03796566 |
| CODEN: | ESPUD |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03796566_v_n592_p605_Dasso |
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Citas:
---------- APA ----------
Dasso, S., Mandrini, C.H., Luoni, M.L., Gulisano, A.M., Nakwacki, M.S., Pohjolainen, S., Van Driel-Gesztelyi, L.,..., Démoulin, P. (2005) . Linking coronal to heliospheric magnetic helicity: A new model-independent technique to compute helicity in magnetic clouds. Solar Wind 11/SOHO 16 - Connecting Sun and Heliosphere(592), 605-608.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03796566_v_n592_p605_Dasso [ ]
---------- CHICAGO ----------
Dasso, S., Mandrini, C.H., Luoni, M.L., Gulisano, A.M., Nakwacki, M.S., Pohjolainen, S., et al. "Linking coronal to heliospheric magnetic helicity: A new model-independent technique to compute helicity in magnetic clouds" . Solar Wind 11/SOHO 16 - Connecting Sun and Heliosphere, no. 592 (2005) : 605-608.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03796566_v_n592_p605_Dasso [ ]
---------- MLA ----------
Dasso, S., Mandrini, C.H., Luoni, M.L., Gulisano, A.M., Nakwacki, M.S., Pohjolainen, S., et al. "Linking coronal to heliospheric magnetic helicity: A new model-independent technique to compute helicity in magnetic clouds" . Solar Wind 11/SOHO 16 - Connecting Sun and Heliosphere, no. 592, 2005, pp. 605-608.Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03796566_v_n592_p605_Dasso [ ]
---------- VANCOUVER ----------
Dasso, S., Mandrini, C.H., Luoni, M.L., Gulisano, A.M., Nakwacki, M.S., Pohjolainen, S., et al. Linking coronal to heliospheric magnetic helicity: A new model-independent technique to compute helicity in magnetic clouds. Eur Space Agency Spec Publ ESA SP. 2005(592):605-608.Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03796566_v_n592_p605_Dasso [ ]
