Artículo
Ensemble Space-Time Correlation of Plasma Turbulence in the Solar Wind
Fecha de publicación:
06/2016
Editorial:
American Physical Society
Revista:
Physical Review Letters
ISSN:
0031-9007
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Single point measurement turbulence cannot distinguish variations in space and time. We employ an ensemble of one- and two-point measurements in the solar wind to estimate the space-time correlation function in the comoving plasma frame. The method is illustrated using near Earth spacecraft observations, employing ACE, Geotail, IMP-8, and Wind data sets. New results include an evaluation of both correlation time and correlation length from a single method, and a new assessment of the accuracy of the familiar frozen-in flow approximation. This novel view of the space-time structure of turbulence may prove essential in exploratory space missions such as Solar Probe Plus and Solar Orbiter for which the frozen-in flow hypothesis may not be a useful approximation.
Palabras clave:
Space Weather
,
Heliosphere
,
Turbulence
,
Magnetohydrodynamics
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Articulos(IAFE)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Citación
Matthaeus, W. H.; Weygand, J. M.; Dasso, Sergio Ricardo; Ensemble Space-Time Correlation of Plasma Turbulence in the Solar Wind; American Physical Society; Physical Review Letters; 116; 24; 6-2016; 245101-245106
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