Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data
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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todo:paper_00319007_v107_n16_p_Osman2023-10-03T14:42:13Z Anisotropic third-moment estimates of the energy cascade in solar wind turbulence using multispacecraft data 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. JOUR 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) |
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 |
JOUR |
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 |
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 |
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1782025729352925184 |