Analysis of large scale MHD quantities in expanding magnetic clouds

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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 cy...

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Autores principales:	Nakwacki, Maria Soledad, Dasso, Sergio Ricardo, Mandrini, Cristina Hemilse
Publicado:	2008
Materias:	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
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v70_n10_p1318_Nakwacki http://hdl.handle.net/20.500.12110/paper_13646826_v70_n10_p1318_Nakwacki
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_13646826_v70_n10_p1318_Nakwacki
record_format	dspace
spelling	paper:paper_13646826_v70_n10_p1318_Nakwacki2023-06-08T16:11:55Z Analysis of large scale MHD quantities in expanding magnetic clouds Nakwacki, Maria Soledad Dasso, Sergio Ricardo Mandrini, Cristina Hemilse 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 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. Fil:Nakwacki, M.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Dasso, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mandrini, C.H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2008 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v70_n10_p1318_Nakwacki http://hdl.handle.net/20.500.12110/paper_13646826_v70_n10_p1318_Nakwacki
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	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
spellingShingle	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 Nakwacki, Maria Soledad Dasso, Sergio Ricardo Mandrini, Cristina Hemilse Analysis of large scale MHD quantities in expanding magnetic clouds
topic_facet	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
description	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.
author	Nakwacki, Maria Soledad Dasso, Sergio Ricardo Mandrini, Cristina Hemilse
author_facet	Nakwacki, Maria Soledad Dasso, Sergio Ricardo Mandrini, Cristina Hemilse
author_sort	Nakwacki, Maria Soledad
title	Analysis of large scale MHD quantities in expanding magnetic clouds
title_short	Analysis of large scale MHD quantities in expanding magnetic clouds
title_full	Analysis of large scale MHD quantities in expanding magnetic clouds
title_fullStr	Analysis of large scale MHD quantities in expanding magnetic clouds
title_full_unstemmed	Analysis of large scale MHD quantities in expanding magnetic clouds
title_sort	analysis of large scale mhd quantities in expanding magnetic clouds
publishDate	2008
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13646826_v70_n10_p1318_Nakwacki http://hdl.handle.net/20.500.12110/paper_13646826_v70_n10_p1318_Nakwacki
work_keys_str_mv	AT nakwackimariasoledad analysisoflargescalemhdquantitiesinexpandingmagneticclouds AT dassosergioricardo analysisoflargescalemhdquantitiesinexpandingmagneticclouds AT mandrinicristinahemilse analysisoflargescalemhdquantitiesinexpandingmagneticclouds
_version_	1768542659474882560

Analysis of large scale MHD quantities in expanding magnetic clouds

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