Scaling of the electron dissipation range of solar wind turbulence - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue The Astrophysical Journal Année : 2013

Scaling of the electron dissipation range of solar wind turbulence

Fouad Sahraoui
S. Y. Huang
  • Fonction : Auteur
M. L. Goldstein
  • Fonction : Auteur
Alessandro Retinò
Judith de Patoul
  • Fonction : Auteur

Résumé

Electron scale solar wind (SW) turbulence has attracted great interest in recent years. Considerable evidence exists that the turbulence is not fully dissipated near the proton scale, but continues cascading down to electron scales. However, the scaling of the magnetic energy spectra as well as the nature of the plasma modes involved at those small scales are still not fully determined. Here we survey 10 yr of the Cluster STAFF search-coil magnetometer waveforms measured in the SW and perform a statistical study of the magnetic energy spectra in the frequency range [1, 180] Hz. We found that 75% of the analyzed spectra exhibit breakpoints near the electron gyroscale ρ e , followed by steeper power-law-like spectra. We show that the scaling below the electron breakpoint cannot be determined unambiguously due to instrumental limitations that we discuss in detail. We compare our results to those reported in other studies and discuss their implications for the physical mechanisms involved and for theoretical modeling of energy dissipation in the SW.

Dates et versions

hal-01552052 , version 1 (30-06-2017)

Identifiants

Citer

Fouad Sahraoui, S. Y. Huang, Gérard Belmont, M. L. Goldstein, Alessandro Retinò, et al.. Scaling of the electron dissipation range of solar wind turbulence. The Astrophysical Journal, 2013, 777 (1), pp.15. ⟨10.1088/0004-637X/777/1/15⟩. ⟨hal-01552052⟩
73 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More