Abstract:
Magnetic clouds (MCs) transport the magnetic flux and helicity released by the Sun. They are generally modeled as a static flux rope traveling in the solar wind, though they can present signatures of expansion. We analyze three expanding MCs using a self-similar free radial expansion model with a cylindrical linear force-free field (i.e., Lundquist solution) as the initial condition. We derive expressions for the magnetic fluxes, the magnetic helicity and the magnetic energy per unit length along the flux tube. We find that these quantities do not differ more than 25 % when using the static or expansion model. © 2008 Elsevier Ltd. All rights reserved.
Registro:
Documento: |
Artículo
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Título: | Analysis of large scale MHD quantities in expanding magnetic clouds |
Autor: | Nakwacki, M.S.; Dasso, S.; Mandrini, C.H.; Démoulin, P. |
Filiación: | Instituto de Astronomía y Física del Espacio, CONICET-UBA, CC. 67 Suc. 28, 1428 Buenos Aires, Argentina Departamento de Física, FCEN, UBA, Argentina Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique, LESIA, Observatoire de Paris, 5 place Jules Janssen, F-92195 Meudon Cedex, France
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Palabras clave: | Driver gases; Ejecta; Interplanetary magnetic fields; Magnetic clouds; Clouds; Flux pinning; Fluxes; Magnetic devices; Magnetic fields; Magnetic flux; Magnetism; Mechanics; Modal analysis; Solar energy; Solar wind; Static analysis; Wind power; Elsevier (CO); Expansion model; Flux ropes; Free fields; Helicity; Initial conditions; Large scales; Magnetic (CE); Magnetic clouds (MC); Magnetic energies; Magnetic helicity; Per unit length; Radial expansions; Self similar; Magnetic materials |
Año: | 2008
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Volumen: | 70
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Número: | 10
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Página de inicio: | 1318
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Página de fin: | 1326
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DOI: |
http://dx.doi.org/10.1016/j.jastp.2008.03.006 |
Título revista: | Journal of Atmospheric and Solar-Terrestrial Physics
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Título revista abreviado: | J. Atmos. Sol.-Terr. Phys.
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ISSN: | 13646826
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v70_n10_p1318_Nakwacki |
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Citas:
---------- APA ----------
Nakwacki, M.S., Dasso, S., Mandrini, C.H. & Démoulin, P.
(2008)
. Analysis of large scale MHD quantities in expanding magnetic clouds. Journal of Atmospheric and Solar-Terrestrial Physics, 70(10), 1318-1326.
http://dx.doi.org/10.1016/j.jastp.2008.03.006---------- CHICAGO ----------
Nakwacki, M.S., Dasso, S., Mandrini, C.H., Démoulin, P.
"Analysis of large scale MHD quantities in expanding magnetic clouds"
. Journal of Atmospheric and Solar-Terrestrial Physics 70, no. 10
(2008) : 1318-1326.
http://dx.doi.org/10.1016/j.jastp.2008.03.006---------- MLA ----------
Nakwacki, M.S., Dasso, S., Mandrini, C.H., Démoulin, P.
"Analysis of large scale MHD quantities in expanding magnetic clouds"
. Journal of Atmospheric and Solar-Terrestrial Physics, vol. 70, no. 10, 2008, pp. 1318-1326.
http://dx.doi.org/10.1016/j.jastp.2008.03.006---------- VANCOUVER ----------
Nakwacki, M.S., Dasso, S., Mandrini, C.H., Démoulin, P. Analysis of large scale MHD quantities in expanding magnetic clouds. J. Atmos. Sol.-Terr. Phys. 2008;70(10):1318-1326.
http://dx.doi.org/10.1016/j.jastp.2008.03.006