Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence

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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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Detalles Bibliográficos
Autor principal: Donato, S.
Otros Autores: Servidio, S., Dmitruk, P., Carbone, V., Shay, M.A, Cassak, P.A, Matthaeus, W.H
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2012
Acceso en línea:Registro en Scopus
DOI
Handle
Registro en la Biblioteca Digital
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Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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100 1 |a Donato, S. 
245 1 0 |a Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence 
260 |c 2012 
270 1 0 |m Donato, S.; Dipartimento di Fisica, Università della Calabria, I-87036 Cosenza, Italy 
506 |2 openaire  |e Política editorial 
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520 3 |a 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.  |l eng 
593 |a Dipartimento di Fisica, Università della Calabria, I-87036 Cosenza, Italy 
593 |a Departamento de Física, Facultad de Ciencias Exactas y Naturales, CONICET, Buenos Aires, Argentina 
593 |a Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, United States 
593 |a Department of Physics, West Virginia University, Morgantown, WV 26506, United States 
690 1 0 |a CURRENT SHEETS 
690 1 0 |a FIELD STRUCTURES 
690 1 0 |a HALL MAGNETOHYDRODYNAMICS 
690 1 0 |a HALL PARAMETERS 
690 1 0 |a ION SKIN DEPTH 
690 1 0 |a LARGE SCALE TURBULENCE 
690 1 0 |a LOCAL GEOMETRY 
690 1 0 |a MAGNETIC ISLAND 
690 1 0 |a MAGNETIC RECONNECTIONS 
690 1 0 |a MICROPHYSICS 
690 1 0 |a RECONNECTION RATE 
690 1 0 |a RECONNECTION SITES 
690 1 0 |a STATISTICAL STUDY 
690 1 0 |a SYSTEM SIZE 
690 1 0 |a TURBULENT SYSTEMS 
690 1 0 |a TWO DIMENSIONAL TURBULENCE 
690 1 0 |a ENERGY DISSIPATION 
690 1 0 |a TWO DIMENSIONAL 
690 1 0 |a MAGNETOHYDRODYNAMICS 
700 1 |a Servidio, S. 
700 1 |a Dmitruk, P. 
700 1 |a Carbone, V. 
700 1 |a Shay, M.A. 
700 1 |a Cassak, P.A. 
700 1 |a Matthaeus, W.H. 
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