Intermittency in Hall-magnetohydrodynamics with a strong guide field

We present a detailed study of intermittency in the velocity and magnetic field fluctuations of compressible Hall-magnetohydrodynamic turbulence with an external guide field. To solve the equations numerically, a reduced model valid when a strong guide field is present is used. Different values for...

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Autores principales: Rodriguez Imazio, P., Martin, L.N., Dmitruk, P., Mininni, P.D.
Formato: JOUR
Materias:
Building structure
Field fluctuations
Intermittency
Ion skin depth
Magnetic field fluctuations
Monofractal
Reduced model
Velocity field
Kinetic theory
Magnetic fields
Probability density function
Velocity
Magnetohydrodynamics
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_1070664X_v20_n5_p_RodriguezImazio
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_1070664X_v20_n5_p_RodriguezImazio
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spelling todo:paper_1070664X_v20_n5_p_RodriguezImazio2023-10-03T16:02:33Z Intermittency in Hall-magnetohydrodynamics with a strong guide field Rodriguez Imazio, P. Martin, L.N. Dmitruk, P. Mininni, P.D. Building structure Field fluctuations Intermittency Ion skin depth Magnetic field fluctuations Monofractal Reduced model Velocity field Kinetic theory Magnetic fields Probability density function Velocity Magnetohydrodynamics We present a detailed study of intermittency in the velocity and magnetic field fluctuations of compressible Hall-magnetohydrodynamic turbulence with an external guide field. To solve the equations numerically, a reduced model valid when a strong guide field is present is used. Different values for the ion skin depth are considered in the simulations. The resulting data are analyzed computing field increments in several directions perpendicular to the guide field, and building structure functions and probability density functions. In the magnetohydrodynamic limit, we recover the usual results with the magnetic field being more intermittent than the velocity field. In the presence of the Hall effect, field fluctuations at scales smaller than the ion skin depth show a substantial decrease in the level of intermittency, with close to monofractal scaling. © 2013 AIP Publishing LLC. Fil:Dmitruk, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mininni, P.D. 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_v20_n5_p_RodriguezImazio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Building structure
Field fluctuations
Intermittency
Ion skin depth
Magnetic field fluctuations
Monofractal
Reduced model
Velocity field
Kinetic theory
Magnetic fields
Probability density function
Velocity
Magnetohydrodynamics
spellingShingle Building structure
Field fluctuations
Intermittency
Ion skin depth
Magnetic field fluctuations
Monofractal
Reduced model
Velocity field
Kinetic theory
Magnetic fields
Probability density function
Velocity
Magnetohydrodynamics
Rodriguez Imazio, P.
Martin, L.N.
Dmitruk, P.
Mininni, P.D.
Intermittency in Hall-magnetohydrodynamics with a strong guide field
topic_facet Building structure
Field fluctuations
Intermittency
Ion skin depth
Magnetic field fluctuations
Monofractal
Reduced model
Velocity field
Kinetic theory
Magnetic fields
Probability density function
Velocity
Magnetohydrodynamics
description We present a detailed study of intermittency in the velocity and magnetic field fluctuations of compressible Hall-magnetohydrodynamic turbulence with an external guide field. To solve the equations numerically, a reduced model valid when a strong guide field is present is used. Different values for the ion skin depth are considered in the simulations. The resulting data are analyzed computing field increments in several directions perpendicular to the guide field, and building structure functions and probability density functions. In the magnetohydrodynamic limit, we recover the usual results with the magnetic field being more intermittent than the velocity field. In the presence of the Hall effect, field fluctuations at scales smaller than the ion skin depth show a substantial decrease in the level of intermittency, with close to monofractal scaling. © 2013 AIP Publishing LLC.
format JOUR
author Rodriguez Imazio, P.
Martin, L.N.
Dmitruk, P.
Mininni, P.D.
author_facet Rodriguez Imazio, P.
Martin, L.N.
Dmitruk, P.
Mininni, P.D.
author_sort Rodriguez Imazio, P.
title Intermittency in Hall-magnetohydrodynamics with a strong guide field
title_short Intermittency in Hall-magnetohydrodynamics with a strong guide field
title_full Intermittency in Hall-magnetohydrodynamics with a strong guide field
title_fullStr Intermittency in Hall-magnetohydrodynamics with a strong guide field
title_full_unstemmed Intermittency in Hall-magnetohydrodynamics with a strong guide field
title_sort intermittency in hall-magnetohydrodynamics with a strong guide field
url http://hdl.handle.net/20.500.12110/paper_1070664X_v20_n5_p_RodriguezImazio
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AT martinln intermittencyinhallmagnetohydrodynamicswithastrongguidefield
AT dmitrukp intermittencyinhallmagnetohydrodynamicswithastrongguidefield
AT mininnipd intermittencyinhallmagnetohydrodynamicswithastrongguidefield
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