Flux rope axis geometry of magnetic clouds deduced from in situ data

Magnetic clouds (MCs) consist of flux ropes that are ejected from the low solar corona during eruptive flares. Following their ejection, they propagate in the interplanetary medium where they can be detected by in situ instruments and heliospheric imagers onboard spacecraft. Although in situ measure...

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Autores principales:	Janvier, M., Démoulin, P., Dasso, S.
Formato:	SER
Materias:	Interplanetary medium Sun: coronal mass ejections (CMEs) Sun: magnetic fields
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_17439213_v8_nS300_p265_Janvier
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_17439213_v8_nS300_p265_Janvier
record_format	dspace
spelling	todo:paper_17439213_v8_nS300_p265_Janvier2023-10-03T16:31:44Z Flux rope axis geometry of magnetic clouds deduced from in situ data Janvier, M. Démoulin, P. Dasso, S. Interplanetary medium Sun: coronal mass ejections (CMEs) Sun: magnetic fields Magnetic clouds (MCs) consist of flux ropes that are ejected from the low solar corona during eruptive flares. Following their ejection, they propagate in the interplanetary medium where they can be detected by in situ instruments and heliospheric imagers onboard spacecraft. Although in situ measurements give a wide range of data, these only depict the nature of the MC along the unidirectional trajectory crossing of a spacecraft. As such, direct 3D measurements of MC characteristics are impossible. From a statistical analysis of a wide range of MCs detected at 1 AU by the Wind spacecraft, we propose different methods to deduce the most probable magnetic cloud axis shape. These methods include the comparison of synthetic distributions with observed distributions of the axis orientation, as well as the direct integration of observed probability distribution to deduce the global MC axis shape. The overall shape given by those two methods is then compared with 2D heliospheric images of a propagating MC and we find similar geometrical features. © 2013 International Astronomical Union. SER info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_17439213_v8_nS300_p265_Janvier
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Interplanetary medium Sun: coronal mass ejections (CMEs) Sun: magnetic fields
spellingShingle	Interplanetary medium Sun: coronal mass ejections (CMEs) Sun: magnetic fields Janvier, M. Démoulin, P. Dasso, S. Flux rope axis geometry of magnetic clouds deduced from in situ data
topic_facet	Interplanetary medium Sun: coronal mass ejections (CMEs) Sun: magnetic fields
description	Magnetic clouds (MCs) consist of flux ropes that are ejected from the low solar corona during eruptive flares. Following their ejection, they propagate in the interplanetary medium where they can be detected by in situ instruments and heliospheric imagers onboard spacecraft. Although in situ measurements give a wide range of data, these only depict the nature of the MC along the unidirectional trajectory crossing of a spacecraft. As such, direct 3D measurements of MC characteristics are impossible. From a statistical analysis of a wide range of MCs detected at 1 AU by the Wind spacecraft, we propose different methods to deduce the most probable magnetic cloud axis shape. These methods include the comparison of synthetic distributions with observed distributions of the axis orientation, as well as the direct integration of observed probability distribution to deduce the global MC axis shape. The overall shape given by those two methods is then compared with 2D heliospheric images of a propagating MC and we find similar geometrical features. © 2013 International Astronomical Union.
format	SER
author	Janvier, M. Démoulin, P. Dasso, S.
author_facet	Janvier, M. Démoulin, P. Dasso, S.
author_sort	Janvier, M.
title	Flux rope axis geometry of magnetic clouds deduced from in situ data
title_short	Flux rope axis geometry of magnetic clouds deduced from in situ data
title_full	Flux rope axis geometry of magnetic clouds deduced from in situ data
title_fullStr	Flux rope axis geometry of magnetic clouds deduced from in situ data
title_full_unstemmed	Flux rope axis geometry of magnetic clouds deduced from in situ data
title_sort	flux rope axis geometry of magnetic clouds deduced from in situ data
url	http://hdl.handle.net/20.500.12110/paper_17439213_v8_nS300_p265_Janvier
work_keys_str_mv	AT janvierm fluxropeaxisgeometryofmagneticcloudsdeducedfrominsitudata AT demoulinp fluxropeaxisgeometryofmagneticcloudsdeducedfrominsitudata AT dassos fluxropeaxisgeometryofmagneticcloudsdeducedfrominsitudata
_version_	1807322841143574528

Flux rope axis geometry of magnetic clouds deduced from in situ data

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