In-situ observations of the three-dimensional energy cascade rate and Yaglom flux in the Earth's magnetosheath

TL;DR

This paper presents in-situ measurements of the three-dimensional energy cascade rate and Yaglom flux in Earth's magnetosheath using a novel LPDE technique applied to MMS data, addressing key challenges in space plasma turbulence analysis.

Contribution

The study introduces the LPDE method to measure 3D energy cascade and Yaglom flux in space plasmas, overcoming previous measurement limitations.

Findings

Successful application of LPDE to MMS data

First in-situ 3D energy cascade measurements in magnetosheath

Enhanced understanding of turbulence in Earth's magnetosheath

Abstract

Measuring the energy cascade rate in space plasmas is a challenging task for several reasons. This quantity is (i) inherently three-dimensional (ii) scale-dependent, (iii) anisotropic in the interplanetary plasma, and (iv) requires measurements of plasma parameters in at least four points. Here, we show how three of such problems have been addressed by applying the novel Lag Polyhedra Derivative Ensemble (LPDE) technique to the Magnetospheric Multiscale (MMS) mission in the Earth's magnetosheath.