Intermittent structures and magnetic discontinuities on small scales in MHD simulations and solar wind

In this work we review some recent studies, in which properties of the magnetic field in high resolution simulations of MHD turbulence with spacecraft data are compared, focusing on methods used to identify classical discontinuities and intermittency statistics. Comparison of ACE solar wind data and...

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Detalles Bibliográficos
Autor principal: Dmitruk, Pablo Ariel
Publicado: 2010
Materias:
Intermittency
Magnetic discontinuities
MHD simulations
Solar wind
Burstiness
Coherent structure
Correlation scale
Current sheets
High resolution simulations
Intermittent structures
Magnetic flux tube
MHD simulation
MHD turbulence
Small scale
Solar wind data
Spacecraft data
Waiting-time
Magnetic fields
Magnetic flux
Magnetic structure
Turbulence
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00320633_v58_n14-15_p1895_Greco
http://hdl.handle.net/20.500.12110/paper_00320633_v58_n14-15_p1895_Greco
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00320633_v58_n14-15_p1895_Greco
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spelling paper:paper_00320633_v58_n14-15_p1895_Greco2023-06-08T14:59:51Z Intermittent structures and magnetic discontinuities on small scales in MHD simulations and solar wind Dmitruk, Pablo Ariel Intermittency Magnetic discontinuities MHD simulations Solar wind Burstiness Coherent structure Correlation scale Current sheets High resolution simulations Intermittency Intermittent structures Magnetic discontinuities Magnetic flux tube MHD simulation MHD turbulence Small scale Solar wind data Spacecraft data Waiting-time Magnetic fields Magnetic flux Magnetic structure Turbulence Solar wind In this work we review some recent studies, in which properties of the magnetic field in high resolution simulations of MHD turbulence with spacecraft data are compared, focusing on methods used to identify classical discontinuities and intermittency statistics. Comparison of ACE solar wind data and simulations of MHD turbulence showed good agreement in waiting-time analysis of magnetic discontinuities, and in the related distribution of magnetic field increments. Further analyses showed that the magnetic discontinuities are not distributed without correlations, but rather that non-Poisson correlations, possibly in the form of burstiness or voids, are present in the data at least up to the typical correlation scale. The discontinuities or bursty coherent structures represent in this view the current sheets that form between magnetic flux tubes which may be a signature of intermittent, anisotropic, fully developed MHD turbulence. © 2010 Elsevier Ltd. All rights reserved. All rights reserved. Fil:Dmitruk, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00320633_v58_n14-15_p1895_Greco http://hdl.handle.net/20.500.12110/paper_00320633_v58_n14-15_p1895_Greco
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Intermittency
Magnetic discontinuities
MHD simulations
Solar wind
Burstiness
Coherent structure
Correlation scale
Current sheets
High resolution simulations
Intermittency
Intermittent structures
Magnetic discontinuities
Magnetic flux tube
MHD simulation
MHD turbulence
Small scale
Solar wind data
Spacecraft data
Waiting-time
Magnetic fields
Magnetic flux
Magnetic structure
Turbulence
Solar wind
spellingShingle Intermittency
Magnetic discontinuities
MHD simulations
Solar wind
Burstiness
Coherent structure
Correlation scale
Current sheets
High resolution simulations
Intermittency
Intermittent structures
Magnetic discontinuities
Magnetic flux tube
MHD simulation
MHD turbulence
Small scale
Solar wind data
Spacecraft data
Waiting-time
Magnetic fields
Magnetic flux
Magnetic structure
Turbulence
Solar wind
Dmitruk, Pablo Ariel
Intermittent structures and magnetic discontinuities on small scales in MHD simulations and solar wind
topic_facet Intermittency
Magnetic discontinuities
MHD simulations
Solar wind
Burstiness
Coherent structure
Correlation scale
Current sheets
High resolution simulations
Intermittency
Intermittent structures
Magnetic discontinuities
Magnetic flux tube
MHD simulation
MHD turbulence
Small scale
Solar wind data
Spacecraft data
Waiting-time
Magnetic fields
Magnetic flux
Magnetic structure
Turbulence
Solar wind
description In this work we review some recent studies, in which properties of the magnetic field in high resolution simulations of MHD turbulence with spacecraft data are compared, focusing on methods used to identify classical discontinuities and intermittency statistics. Comparison of ACE solar wind data and simulations of MHD turbulence showed good agreement in waiting-time analysis of magnetic discontinuities, and in the related distribution of magnetic field increments. Further analyses showed that the magnetic discontinuities are not distributed without correlations, but rather that non-Poisson correlations, possibly in the form of burstiness or voids, are present in the data at least up to the typical correlation scale. The discontinuities or bursty coherent structures represent in this view the current sheets that form between magnetic flux tubes which may be a signature of intermittent, anisotropic, fully developed MHD turbulence. © 2010 Elsevier Ltd. All rights reserved. All rights reserved.
author Dmitruk, Pablo Ariel
author_facet Dmitruk, Pablo Ariel
author_sort Dmitruk, Pablo Ariel
title Intermittent structures and magnetic discontinuities on small scales in MHD simulations and solar wind
title_short Intermittent structures and magnetic discontinuities on small scales in MHD simulations and solar wind
title_full Intermittent structures and magnetic discontinuities on small scales in MHD simulations and solar wind
title_fullStr Intermittent structures and magnetic discontinuities on small scales in MHD simulations and solar wind
title_full_unstemmed Intermittent structures and magnetic discontinuities on small scales in MHD simulations and solar wind
title_sort intermittent structures and magnetic discontinuities on small scales in mhd simulations and solar wind
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00320633_v58_n14-15_p1895_Greco
http://hdl.handle.net/20.500.12110/paper_00320633_v58_n14-15_p1895_Greco
work_keys_str_mv AT dmitrukpabloariel intermittentstructuresandmagneticdiscontinuitiesonsmallscalesinmhdsimulationsandsolarwind
_version_ 1768546291046940672

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