Three Dimensional Anisotropic k Spectra of Turbulence at Subproton Scales in the Solar Wind

We show the first three dimensional (3D) dispersion relations and $k$ spectra of magnetic turbulence in the solar wind at subproton scales. We used the Cluster data with short separations and applied the $k$-filtering technique to the frequency range where the transition to subproton scales occurs. ... View More