Evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere

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The formation of coherent structures in turbulence is a signature of a developing cascade and therefore might be observable by analyzing inner heliospheric solar wind turbulence. To test this idea, data from the Helios 2 mission, for six streams of solar wind at different heliocentric distances and...

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Detalles Bibliográficos
Autores principales:	Greco, A., Matthaeus, W.H., D'Amicis, R., Servidio, S., Dmitruk, P.
Formato:	JOUR
Materias:	magnetohydrodynamics (MHD) solar wind turbulence
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_0004637X_v749_n2_p_Greco
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_0004637X_v749_n2_p_Greco
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spelling	todo:paper_0004637X_v749_n2_p_Greco2023-10-03T14:02:19Z Evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere Greco, A. Matthaeus, W.H. D'Amicis, R. Servidio, S. Dmitruk, P. magnetohydrodynamics (MHD) solar wind turbulence The formation of coherent structures in turbulence is a signature of a developing cascade and therefore might be observable by analyzing inner heliospheric solar wind turbulence. To test this idea, data from the Helios 2 mission, for six streams of solar wind at different heliocentric distances and of different velocities, were subjected to statistical analysis using the partial variance of increments (PVI) approach. We see a clear increase of the PVI distribution function versus solar wind age for higher PVI cutoff, indicating development of non-Gaussian coherent structures. The plausibility of this interpretation is confirmed by a similar behavior observed in two-dimensional magnetohydrodynamics simulation data at corresponding dimensionless nonlinear times. © 2012. The American Astronomical Society. All rights reserved. Fil:Dmitruk, P. 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_0004637X_v749_n2_p_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	magnetohydrodynamics (MHD) solar wind turbulence
spellingShingle	magnetohydrodynamics (MHD) solar wind turbulence Greco, A. Matthaeus, W.H. D'Amicis, R. Servidio, S. Dmitruk, P. Evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere
topic_facet	magnetohydrodynamics (MHD) solar wind turbulence
description	The formation of coherent structures in turbulence is a signature of a developing cascade and therefore might be observable by analyzing inner heliospheric solar wind turbulence. To test this idea, data from the Helios 2 mission, for six streams of solar wind at different heliocentric distances and of different velocities, were subjected to statistical analysis using the partial variance of increments (PVI) approach. We see a clear increase of the PVI distribution function versus solar wind age for higher PVI cutoff, indicating development of non-Gaussian coherent structures. The plausibility of this interpretation is confirmed by a similar behavior observed in two-dimensional magnetohydrodynamics simulation data at corresponding dimensionless nonlinear times. © 2012. The American Astronomical Society. All rights reserved.
format	JOUR
author	Greco, A. Matthaeus, W.H. D'Amicis, R. Servidio, S. Dmitruk, P.
author_facet	Greco, A. Matthaeus, W.H. D'Amicis, R. Servidio, S. Dmitruk, P.
author_sort	Greco, A.
title	Evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere
title_short	Evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere
title_full	Evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere
title_fullStr	Evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere
title_full_unstemmed	Evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere
title_sort	evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere
url	http://hdl.handle.net/20.500.12110/paper_0004637X_v749_n2_p_Greco
work_keys_str_mv	AT grecoa evidencefornonlineardevelopmentofmagnetohydrodynamicscaleintermittencyintheinnerheliosphere AT matthaeuswh evidencefornonlineardevelopmentofmagnetohydrodynamicscaleintermittencyintheinnerheliosphere AT damicisr evidencefornonlineardevelopmentofmagnetohydrodynamicscaleintermittencyintheinnerheliosphere AT servidios evidencefornonlineardevelopmentofmagnetohydrodynamicscaleintermittencyintheinnerheliosphere AT dmitrukp evidencefornonlineardevelopmentofmagnetohydrodynamicscaleintermittencyintheinnerheliosphere
_version_	1807318373704400896

Evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere

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