Evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere
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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_0004637X_v749_n2_p_Greco |
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paperaa:paper_0004637X_v749_n2_p_Greco2023-06-12T16:41:06Z Evidence for nonlinear development of magnetohydrodynamic scale intermittency in the inner heliosphere Astrophys. J. 2012;749(2) 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. 2012 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_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) |
| language |
Inglés |
| orig_language_str_mv |
eng |
| 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 |
Artículo Artículo publishedVersion |
| 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 |
| publishDate |
2012 |
| url |
http://hdl.handle.net/20.500.12110/paper_0004637X_v749_n2_p_Greco |
| work_keys_str_mv |
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1769810207479693312 |