Search Publications
Multipoint observation of anisotropy and intermittency in solar-wind turbulence
Perri, S.; Carbone, V.; Sorriso-Valvo, L. +1 more
Using high-resolution magnetic-field Cluster observations, we have investigated the magnetic-field anisotropy via the second- and fourth-order structure functions over a wide range of scales reaching below the subproton scale. The magnetic-field increments have been computed from single- and two-spacecraft measurements. The two-satellite technique…
Acceleration of solar wind ions to 1 MeV by electromagnetic structures upstream of the Earth's bow shock
Yamauchi, M.; Stasiewicz, K.; Markidis, S. +2 more
We present measurements from the ESA/NASA Cluster mission that show in situ acceleration of ions to energies of 1 MeV outside the bow shock. The observed heating can be associated with the presence of electromagnetic structures with strong spatial gradients of the electric field that lead to ion gyro-phase breaking and to the onset of chaos in ion…
Double mid-latitude dynamical reconnection at the magnetopause: An efficient mechanism allowing solar wind to enter the Earth's magnetosphere
Califano, F.; Pegoraro, F.; Faganello, M. +1 more
Three-dimensional simulations of the Kelvin-Helmholtz (KH) instability in a magnetic configuration reproducing typical conditions at the flank Earth's magnetosphere during northward periods show the system's ability to generate favorable conditions for magnetic reconnection to occur at mid-latitude. Once these conditions are established, magnetic …
On the scaling properties of anisotropy of interplanetary magnetic turbulent fluctuations
Carbone, V.; Sorriso-Valvo, L.; Yordanova, E.
The anisotropic character of interplanetary magnetic-field turbulence has been studied through the analysis of Cluster data. The full tensor of the mixed second-order structure functions has been used to quatitatively measure the degree of anisotropy and its effect on small-scale turbulence. Three different regions of the near-Earth space have bee…