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
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 http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00319007_v107_n16_p_Osman_oai
Aporte de:	Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires

id	I28-R145-paper_00319007_v107_n16_p_Osman_oai
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spelling	I28-R145-paper_00319007_v107_n16_p_Osman_oai2020-10-19 Osman, K.T. Wan, M. Matthaeus, W.H. Weygand, J.M. Dasso, S. 2011 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. application/pdf http://hdl.handle.net/20.500.12110/paper_00319007_v107_n16_p_Osman info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Phys Rev Lett 2011;107(16) 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 Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00319007_v107_n16_p_Osman_oai
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-145
collection	Repositorio Digital de la Universidad de Buenos Aires (UBA)
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 http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00319007_v107_n16_p_Osman_oai
work_keys_str_mv	AT osmankt anisotropicthirdmomentestimatesoftheenergycascadeinsolarwindturbulenceusingmultispacecraftdata AT wanm anisotropicthirdmomentestimatesoftheenergycascadeinsolarwindturbulenceusingmultispacecraftdata AT matthaeuswh anisotropicthirdmomentestimatesoftheenergycascadeinsolarwindturbulenceusingmultispacecraftdata AT weygandjm anisotropicthirdmomentestimatesoftheenergycascadeinsolarwindturbulenceusingmultispacecraftdata AT dassos anisotropicthirdmomentestimatesoftheenergycascadeinsolarwindturbulenceusingmultispacecraftdata
_version_	1766026624734593024

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

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