Articolo in rivista, 2007,

Observation of inertial energy cascade in interplanetary space plasma

Sorriso-Valvo L., Marino R., Carbone V., Noullez A., Lepreti F., Veltri P., Bruno R., Bavassano B., Pietropaolo E.

INFM, CNR, Licryl Reg Lab, I-87036 Arcavacata Di Rende, Italy; Univ Calabria, Dipartimento Fis, I-87036 Arcavacata Di Rende, Italy; Observ Cote Azur, F-06003 Nice, France; IFSI, CNR, Rome, Italy; Univ Aquila, Dipartimento Fis, I-67100 Laquila, Italy

Direct evidence for the presence of an inertial energy cascade, the most characteristic signature of hydromagnetic turbulence (MHD), is observed in the solar wind by the Ulysses spacecraft. After a brief rederivation of the equivalent of Yaglom's law for MHD turbulence, a linear relation is indeed observed for the scaling of mixed third-order structure functions involving Elsasser variables. This experimental result firmly establishes the turbulent character of low-frequency velocity and magnetic field fluctuations in the solar wind plasma.

Physical review letters (Print) 99

Keywords

SOLAR-WIND, MAGNETOHYDRODYNAMIC TURBULENCE, MAGNETIC-FIELD, ULYSSES, WAVES

CNR authors

Sorriso Valvo Luca

CNR institutes

IPCF – Istituto per i processi chimico-fisici, INFM – Centro di responsabilità scientifica INFM

ID: 167924

Year: 2007

Type: Articolo in rivista

Last update: 2012-04-24 10:53:33.000

External links

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External IDs

CNR OAI-PMH: oai:it.cnr:prodotti:167924