Overview on numerical studies of reconnection and dissipation in the solar wind

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In this work, recent advances in numerical studies of local reconnection events in the turbulent plasmas are reviewed. Recently [1], the nonlinear dynamics of magnetic reconnection in turbulence has been investigated through high resolution numerical simulations. Both fluid (MHD and Hall MHD) and ki...

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Autores principales: Donato, S., Servidio, S., Dmitruk, P., Valentini, F., Greco, A., Veltri, P., Wan, M., Shay, M.A., Cassak, P.A., Matthaeus, W.H.
Formato: Documento de conferencia publishedVersion
Lenguaje:Inglés
Publicado: 2013
Materias:
Magnetic Reconnection
Plasma simulations
Plasma Turbulence
Solar Windc
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0094243X_v1539_n_p99_Donato
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paperaa:paper_0094243X_v1539_n_p99_Donato
record_format dspace
spelling paperaa:paper_0094243X_v1539_n_p99_Donato2023-06-12T16:46:09Z Overview on numerical studies of reconnection and dissipation in the solar wind AIP Conf. Proc. 2013;1539:99-104 Donato, S. Servidio, S. Dmitruk, P. Valentini, F. Greco, A. Veltri, P. Wan, M. Shay, M.A. Cassak, P.A. Matthaeus, W.H. Magnetic Reconnection Plasma simulations Plasma Turbulence Solar Windc In this work, recent advances in numerical studies of local reconnection events in the turbulent plasmas are reviewed. Recently [1], the nonlinear dynamics of magnetic reconnection in turbulence has been investigated through high resolution numerical simulations. Both fluid (MHD and Hall MHD) and kinetic (HybridVlasov) 2D simulations reveal the presence of a large number of X-type neutral points, where magnetic reconnection locally occurs. The associated reconnection rates are distributed over a wide range of values and they depend on the local geometry of the diffusion region. This new approach to the study of magnetic reconnection has broad applications to the turbulent solar wind (SW). Strong magnetic SW discontinuities are in fact strongly related to these intermittent processes of reconnection [2, 3]. Methods employed to identify sets of possible reconnection events along a one-dimensional path through the turbulent field (emulating experimental sampling by a single detector in a highspeed flow) are here reviewed. These local reconnection/discontinuity events may be the main sites of heating and particle acceleration processes [4]. Results from hybrid-Vlasov kinetic simulations support these observations [5, 6]. In the turbulent regime, in fact, kinetic effects manifest through a deformation of the ion distribution function. These patterns of non-Maxwellian features are concentrated in space nearby regions of strong magnetic activity. These results open a new path on the study of kinetic processes such as heating, particle acceleration, and temperature anisotropy, commonly observed in astrophysics. © 2013 AIP Publishing LLC. Fil:Dmitruk, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 info:eu-repo/semantics/conferenceObject info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0094243X_v1539_n_p99_Donato
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic Magnetic Reconnection
Plasma simulations
Plasma Turbulence
Solar Windc
spellingShingle Magnetic Reconnection
Plasma simulations
Plasma Turbulence
Solar Windc
Donato, S.
Servidio, S.
Dmitruk, P.
Valentini, F.
Greco, A.
Veltri, P.
Wan, M.
Shay, M.A.
Cassak, P.A.
Matthaeus, W.H.
Overview on numerical studies of reconnection and dissipation in the solar wind
topic_facet Magnetic Reconnection
Plasma simulations
Plasma Turbulence
Solar Windc
description In this work, recent advances in numerical studies of local reconnection events in the turbulent plasmas are reviewed. Recently [1], the nonlinear dynamics of magnetic reconnection in turbulence has been investigated through high resolution numerical simulations. Both fluid (MHD and Hall MHD) and kinetic (HybridVlasov) 2D simulations reveal the presence of a large number of X-type neutral points, where magnetic reconnection locally occurs. The associated reconnection rates are distributed over a wide range of values and they depend on the local geometry of the diffusion region. This new approach to the study of magnetic reconnection has broad applications to the turbulent solar wind (SW). Strong magnetic SW discontinuities are in fact strongly related to these intermittent processes of reconnection [2, 3]. Methods employed to identify sets of possible reconnection events along a one-dimensional path through the turbulent field (emulating experimental sampling by a single detector in a highspeed flow) are here reviewed. These local reconnection/discontinuity events may be the main sites of heating and particle acceleration processes [4]. Results from hybrid-Vlasov kinetic simulations support these observations [5, 6]. In the turbulent regime, in fact, kinetic effects manifest through a deformation of the ion distribution function. These patterns of non-Maxwellian features are concentrated in space nearby regions of strong magnetic activity. These results open a new path on the study of kinetic processes such as heating, particle acceleration, and temperature anisotropy, commonly observed in astrophysics. © 2013 AIP Publishing LLC.
format Documento de conferencia
Documento de conferencia
publishedVersion
author Donato, S.
Servidio, S.
Dmitruk, P.
Valentini, F.
Greco, A.
Veltri, P.
Wan, M.
Shay, M.A.
Cassak, P.A.
Matthaeus, W.H.
author_facet Donato, S.
Servidio, S.
Dmitruk, P.
Valentini, F.
Greco, A.
Veltri, P.
Wan, M.
Shay, M.A.
Cassak, P.A.
Matthaeus, W.H.
author_sort Donato, S.
title Overview on numerical studies of reconnection and dissipation in the solar wind
title_short Overview on numerical studies of reconnection and dissipation in the solar wind
title_full Overview on numerical studies of reconnection and dissipation in the solar wind
title_fullStr Overview on numerical studies of reconnection and dissipation in the solar wind
title_full_unstemmed Overview on numerical studies of reconnection and dissipation in the solar wind
title_sort overview on numerical studies of reconnection and dissipation in the solar wind
publishDate 2013
url http://hdl.handle.net/20.500.12110/paper_0094243X_v1539_n_p99_Donato
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