Overview on numerical studies of reconnection and dissipation in the solar wind
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...
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2013
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_0094243X_v1539_n_p99_Donato https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_0094243X_v1539_n_p99_Donato_oai |
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I28-R145-paper_0094243X_v1539_n_p99_Donato_oai2024-08-16 Donato, S. Servidio, S. Dmitruk, P. Valentini, F. Greco, A. Veltri, P. Wan, M. Shay, M.A. Cassak, P.A. Matthaeus, W.H. 2013 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. application/pdf http://hdl.handle.net/20.500.12110/paper_0094243X_v1539_n_p99_Donato info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar AIP Conf. Proc. 2013;1539:99-104 Magnetic Reconnection Plasma simulations Plasma Turbulence Solar Windc Overview on numerical studies of reconnection and dissipation in the solar wind info:eu-repo/semantics/conferenceObject info:ar-repo/semantics/documento de conferencia info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_0094243X_v1539_n_p99_Donato_oai |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| 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 https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_0094243X_v1539_n_p99_Donato_oai |
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1809356897383350272 |