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dc.contributor.author
Roy, Sohom
dc.contributor.author
Chhiber, R.
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Dasso, Sergio Ricardo
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Ruiz, Maria Emilia
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Matthaeus, W .H.
dc.date.available
2023-10-09T12:14:11Z
dc.date.issued
2022-04
dc.identifier.citation
Roy, Sohom; Chhiber, R.; Dasso, Sergio Ricardo; Ruiz, Maria Emilia; Matthaeus, W .H.; Von Karman correlation similarity in solar wind magnetohydrodynamic turbulence; American Physical Society; Physical Review E; 105; 4; 4-2022; 1-7
dc.identifier.issn
2470-0045
dc.identifier.uri
http://hdl.handle.net/11336/214470
dc.description.abstract
A major development underlying hydrodynamic turbulence theory is the similarity decay hypothesis due to von Karman and Howarth, here extended empirically to plasma turbulence in the solar wind. In similarity decay the second-order correlation experiences a continuous transformation based on a universal functional form and a rescaling of energy and characteristic length. Solar wind turbulence follows many principles adapted from classical fluid turbulence, but previously this similarity property has not been examined explicitly. Here, we analyze an ensemble of Elsässer autocorrelation functions computed from Advanced Composition Explorer data at 1 astronomical unit (AU), and demonstrate explicitly that the two-point correlation functions undergo a collapse to a similarity form of the type anticipated from von Karman's hypothesis applied to weakly compressive magnetohydrodynamic turbulence. This provides a firm empirical basis for employing the similarity decay hypothesis to the Elsässer correlations that represent the incompressive turbulence cascade. This approach is of substantial utility in space turbulence data analysis, and for adopting von Karman-type heating rates in global and subgrid-scale dynamical modeling.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Space Weather
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Solar Wind
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Turbulence
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MHD
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Von Karman correlation similarity in solar wind magnetohydrodynamic turbulence
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-10-09T10:36:39Z
dc.identifier.eissn
2470-0053
dc.journal.volume
105
dc.journal.number
4
dc.journal.pagination
1-7
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Roy, Sohom. University Of Delaware; Estados Unidos
dc.description.fil
Fil: Chhiber, R.. University Of Delaware; Estados Unidos
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Fil: Dasso, Sergio Ricardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.description.fil
Fil: Ruiz, Maria Emilia. Ministerio de Defensa. Secretaria de Planeamiento. Servicio Meteorológico Nacional; Argentina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.description.fil
Fil: Matthaeus, W .H.. University Of Delaware; Estados Unidos
dc.journal.title
Physical Review E
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevE.105.045204
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