Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence

The statistical study of magnetic reconnection events in two-dimensional turbulence has been performed by comparing numerical simulations of magnetohydrodynamics (MHD) and Hall magnetohydrodynamics (HMHD). The analysis reveals that the Hall term plays an important role in turbulence, in which magnet...

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Autores principales: Donato, S., Servidio, S., Dmitruk, P., Carbone, V., Shay, M.A., Cassak, P.A., Matthaeus, W.H.
Formato: JOUR
Materias:
Current sheets
Field structures
Hall magnetohydrodynamics
Hall parameters
Ion skin depth
Large scale turbulence
Local geometry
Magnetic island
Magnetic reconnections
Microphysics
Reconnection rate
Reconnection sites
Statistical study
System size
Turbulent systems
Two dimensional turbulence
Energy dissipation
Two dimensional
Magnetohydrodynamics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_1070664X_v19_n9_p_Donato
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_1070664X_v19_n9_p_Donato
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spelling todo:paper_1070664X_v19_n9_p_Donato2023-10-03T16:02:32Z Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence Donato, S. Servidio, S. Dmitruk, P. Carbone, V. Shay, M.A. Cassak, P.A. Matthaeus, W.H. Current sheets Field structures Hall magnetohydrodynamics Hall parameters Ion skin depth Large scale turbulence Local geometry Magnetic island Magnetic reconnections Microphysics Reconnection rate Reconnection sites Statistical study System size Turbulent systems Two dimensional turbulence Energy dissipation Two dimensional Magnetohydrodynamics The statistical study of magnetic reconnection events in two-dimensional turbulence has been performed by comparing numerical simulations of magnetohydrodynamics (MHD) and Hall magnetohydrodynamics (HMHD). The analysis reveals that the Hall term plays an important role in turbulence, in which magnetic islands simultaneously reconnect in a complex way. In particular, an increase of the Hall parameter, the ratio of ion skin depth to system size, broadens the distribution of reconnection rates relative to the MHD case. Moreover, in HMHD the local geometry of the reconnection region changes, manifesting bifurcated current sheets and quadrupolar magnetic field structures in analogy to laminar studies, leading locally to faster reconnection processes in this case of reconnection embedded in turbulence. This study supports the idea that the global rate of energy dissipation is controlled by the large scale turbulence, but suggests that the distribution of the reconnection rates within the turbulent system is sensitive to the microphysics at the reconnection sites. © 2012 American Institute of Physics. Fil:Dmitruk, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_1070664X_v19_n9_p_Donato
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Current sheets
Field structures
Hall magnetohydrodynamics
Hall parameters
Ion skin depth
Large scale turbulence
Local geometry
Magnetic island
Magnetic reconnections
Microphysics
Reconnection rate
Reconnection sites
Statistical study
System size
Turbulent systems
Two dimensional turbulence
Energy dissipation
Two dimensional
Magnetohydrodynamics
spellingShingle Current sheets
Field structures
Hall magnetohydrodynamics
Hall parameters
Ion skin depth
Large scale turbulence
Local geometry
Magnetic island
Magnetic reconnections
Microphysics
Reconnection rate
Reconnection sites
Statistical study
System size
Turbulent systems
Two dimensional turbulence
Energy dissipation
Two dimensional
Magnetohydrodynamics
Donato, S.
Servidio, S.
Dmitruk, P.
Carbone, V.
Shay, M.A.
Cassak, P.A.
Matthaeus, W.H.
Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence
topic_facet Current sheets
Field structures
Hall magnetohydrodynamics
Hall parameters
Ion skin depth
Large scale turbulence
Local geometry
Magnetic island
Magnetic reconnections
Microphysics
Reconnection rate
Reconnection sites
Statistical study
System size
Turbulent systems
Two dimensional turbulence
Energy dissipation
Two dimensional
Magnetohydrodynamics
description The statistical study of magnetic reconnection events in two-dimensional turbulence has been performed by comparing numerical simulations of magnetohydrodynamics (MHD) and Hall magnetohydrodynamics (HMHD). The analysis reveals that the Hall term plays an important role in turbulence, in which magnetic islands simultaneously reconnect in a complex way. In particular, an increase of the Hall parameter, the ratio of ion skin depth to system size, broadens the distribution of reconnection rates relative to the MHD case. Moreover, in HMHD the local geometry of the reconnection region changes, manifesting bifurcated current sheets and quadrupolar magnetic field structures in analogy to laminar studies, leading locally to faster reconnection processes in this case of reconnection embedded in turbulence. This study supports the idea that the global rate of energy dissipation is controlled by the large scale turbulence, but suggests that the distribution of the reconnection rates within the turbulent system is sensitive to the microphysics at the reconnection sites. © 2012 American Institute of Physics.
format JOUR
author Donato, S.
Servidio, S.
Dmitruk, P.
Carbone, V.
Shay, M.A.
Cassak, P.A.
Matthaeus, W.H.
author_facet Donato, S.
Servidio, S.
Dmitruk, P.
Carbone, V.
Shay, M.A.
Cassak, P.A.
Matthaeus, W.H.
author_sort Donato, S.
title Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence
title_short Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence
title_full Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence
title_fullStr Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence
title_full_unstemmed Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence
title_sort reconnection events in two-dimensional hall magnetohydrodynamic turbulence
url http://hdl.handle.net/20.500.12110/paper_1070664X_v19_n9_p_Donato
work_keys_str_mv AT donatos reconnectioneventsintwodimensionalhallmagnetohydrodynamicturbulence
AT servidios reconnectioneventsintwodimensionalhallmagnetohydrodynamicturbulence
AT dmitrukp reconnectioneventsintwodimensionalhallmagnetohydrodynamicturbulence
AT carbonev reconnectioneventsintwodimensionalhallmagnetohydrodynamicturbulence
AT shayma reconnectioneventsintwodimensionalhallmagnetohydrodynamicturbulence
AT cassakpa reconnectioneventsintwodimensionalhallmagnetohydrodynamicturbulence
AT matthaeuswh reconnectioneventsintwodimensionalhallmagnetohydrodynamicturbulence
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