A Joint Multifractal Approach to Solar Wind Turbulence

Previous studies have shown that solar wind, a plasma medium with turbulent dynamics,
exhibits anomalous scaling features, i.e., intermittency, in the inertial domain. This intermittent nature
has primarily been investigated through the study of the scaling features of the structure functions
of single quantities. We use a novel approach based on joint multifractal analysis in this study to
simultaneously investigate the scaling characteristics of both the magnetic field and the plasma
velocity in solar wind turbulence. Specifically, we focus on the joint multifractal behavior of magnetic
and velocity field fluctuations in both fast and slow solar wind streams observed by the ESA-Ulysses
satellite, with the goal of identifying any differences in their joint multifractal characteristics.