Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data

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The first direct determination of the inertial range energy cascade rate, using an anisotropic form of Yaglom's law for magnetohydrodynamic turbulence, is obtained in the solar wind with multispacecraft measurements. The two-point mixed third-order structure functions of Elsässer fluctuations a...

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Autores principales: Osman, K.T., Wan, M., Matthaeus, W.H., Weygand, J.M., Dasso, S.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2011
Materias:
Direct determination
Energy cascade
Linear scaling
Low frequency limits
Magnetohydrodynamic turbulence
Non-adiabatic
Solar-wind turbulence
Structure functions
Third-order
Two-point
Velocity field
Anisotropy
Heating
Magnetic fields
Magnetohydrodynamics
Solar wind
Spheres
Turbulence
Velocity
Solar energy
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319007_v107_n16_p_Osman
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paperaa:paper_00319007_v107_n16_p_Osman
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spelling paperaa:paper_00319007_v107_n16_p_Osman2023-06-12T16:45:25Z Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data Phys Rev Lett 2011;107(16) Osman, K.T. Wan, M. Matthaeus, W.H. Weygand, J.M. Dasso, S. Direct determination Energy cascade Linear scaling Low frequency limits Magnetohydrodynamic turbulence Non-adiabatic Solar-wind turbulence Structure functions Third-order Two-point Velocity field Anisotropy Heating Magnetic fields Magnetohydrodynamics Solar wind Spheres Turbulence Velocity Solar energy The first direct determination of the inertial range energy cascade rate, using an anisotropic form of Yaglom's law for magnetohydrodynamic turbulence, is obtained in the solar wind with multispacecraft measurements. The two-point mixed third-order structure functions of Elsässer fluctuations are integrated over a sphere in magnetic field-aligned coordinates, and the result is consistent with a linear scaling. Therefore, volume integrated heating and cascade rates are obtained that, unlike previous studies, make only limited assumptions about the underlying spectral geometry of solar wind turbulence. These results confirm the turbulent nature of magnetic and velocity field fluctuations in the low frequency limit, and could supply the energy necessary to account for the nonadiabatic heating of the solar wind. © 2011 American Physical Society. Fil:Dasso, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00319007_v107_n16_p_Osman
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Inglés
orig_language_str_mv eng
topic Direct determination
Energy cascade
Linear scaling
Low frequency limits
Magnetohydrodynamic turbulence
Non-adiabatic
Solar-wind turbulence
Structure functions
Third-order
Two-point
Velocity field
Anisotropy
Heating
Magnetic fields
Magnetohydrodynamics
Solar wind
Spheres
Turbulence
Velocity
Solar energy
spellingShingle Direct determination
Energy cascade
Linear scaling
Low frequency limits
Magnetohydrodynamic turbulence
Non-adiabatic
Solar-wind turbulence
Structure functions
Third-order
Two-point
Velocity field
Anisotropy
Heating
Magnetic fields
Magnetohydrodynamics
Solar wind
Spheres
Turbulence
Velocity
Solar energy
Osman, K.T.
Wan, M.
Matthaeus, W.H.
Weygand, J.M.
Dasso, S.
Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data
topic_facet Direct determination
Energy cascade
Linear scaling
Low frequency limits
Magnetohydrodynamic turbulence
Non-adiabatic
Solar-wind turbulence
Structure functions
Third-order
Two-point
Velocity field
Anisotropy
Heating
Magnetic fields
Magnetohydrodynamics
Solar wind
Spheres
Turbulence
Velocity
Solar energy
description The first direct determination of the inertial range energy cascade rate, using an anisotropic form of Yaglom's law for magnetohydrodynamic turbulence, is obtained in the solar wind with multispacecraft measurements. The two-point mixed third-order structure functions of Elsässer fluctuations are integrated over a sphere in magnetic field-aligned coordinates, and the result is consistent with a linear scaling. Therefore, volume integrated heating and cascade rates are obtained that, unlike previous studies, make only limited assumptions about the underlying spectral geometry of solar wind turbulence. These results confirm the turbulent nature of magnetic and velocity field fluctuations in the low frequency limit, and could supply the energy necessary to account for the nonadiabatic heating of the solar wind. © 2011 American Physical Society.
format Artículo
Artículo
publishedVersion
author Osman, K.T.
Wan, M.
Matthaeus, W.H.
Weygand, J.M.
Dasso, S.
author_facet Osman, K.T.
Wan, M.
Matthaeus, W.H.
Weygand, J.M.
Dasso, S.
author_sort Osman, K.T.
title Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data
title_short Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data
title_full Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data
title_fullStr Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data
title_full_unstemmed Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data
title_sort anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data
publishDate 2011
url http://hdl.handle.net/20.500.12110/paper_00319007_v107_n16_p_Osman
work_keys_str_mv AT osmankt anisotropicthirdmomentestimatesoftheenergycascadeinsolarwindturbulenceusingmultispacecraftdata
AT wanm anisotropicthirdmomentestimatesoftheenergycascadeinsolarwindturbulenceusingmultispacecraftdata
AT matthaeuswh anisotropicthirdmomentestimatesoftheenergycascadeinsolarwindturbulenceusingmultispacecraftdata
AT weygandjm anisotropicthirdmomentestimatesoftheenergycascadeinsolarwindturbulenceusingmultispacecraftdata
AT dassos anisotropicthirdmomentestimatesoftheenergycascadeinsolarwindturbulenceusingmultispacecraftdata
_version_ 1769810100088733696

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