Artículo
A statistical study of the compressible energy cascade rate in solar wind turbulence: Parker solar probe observations
Fecha de publicación:
03/2023
Editorial:
American Institute of Physics
Revista:
Physics Of Plasmas
ISSN:
1070-664X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We investigated incompressible and compressible magnetohydrodynamic (MHD) energy cascade rates in the solar wind at different heliocentric distances. We used in situ magnetic field and plasma observations provided by the Parker Solar Probe mission and exact relations in fully developed turbulence. To estimate the compressible cascade rate, we applied two recent exact relations for compressible isothermal and polytropic MHD turbulence, respectively. Our observational results show a clear increase in the absolute value of the compressible and incompressible cascade rates as we get closer to the Sun. Moreover, we obtained an increase in both isothermal and polytropic cascade rates with respect to the incompressible case as compressibility increases in the plasma. Further discussion about the relation between the compressibility and the heliocentric distance is carried out. Furthermore, we compared both exact relations as compressibility increases in the solar wind, and although we note a slight trend to observe larger cascades using a polytropic closure, we obtained essentially the same cascade rate in the range of compressibility observed. Finally, we investigated the signed incompressible and compressible energy cascade rates and its connection with the real cascade rate.
Palabras clave:
Solar Wind
,
Turbulence
,
Magnetohydrodynamics
,
Compressible
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IAFE)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Articulos de INST.DE ASTRONOMIA Y FISICA DEL ESPACIO(I)
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos(INFINA)
Articulos de INST.DE FISICA DEL PLASMA
Articulos de INST.DE FISICA DEL PLASMA
Citación
Brodiano, Maia; Dmitruk, Pablo Ariel; Andrés, Nahuel; A statistical study of the compressible energy cascade rate in solar wind turbulence: Parker solar probe observations; American Institute of Physics; Physics Of Plasmas; 30; 3; 3-2023; 1-15
Compartir
Altmétricas