Speaker
Description
First Name: Julia
Last Name: Stawarz
Email Address: julia.stawarz@northumbria.ac.uk
Affiliation: Northumbria University
All Authors: Julia E. Stawarz, Lorenzo Matteini, Luca Sorriso-Valvo, Jaye Verniero, Raffaella D’Amicis, Lina Hadid, Utsav Panchal, Denise Perrone, Yeimy Rivera, Sergio Toledo Redondo, Robert Wicks
Abstract: Complex turbulent dynamics that facilitate energy transfer from large to progressively smaller scales play an important role in the solar wind. A key challenge in the study of solar wind turbulence is understanding how and to what extent the nature of the turbulent dynamics vary as the solar wind expands from the Sun. However, disentangling the dynamical evolution of the turbulence from variations in the properties of different solar wind streams and temporal variations in the source region of a given stream has traditionally been challenging in the solar wind. We examine an alignment between Parker Solar Probe and Solar Orbiter, which occurred in February 2022, to examine how solar wind turbulence evolves with radial distance. During this alignment the two spacecraft observed the same stream of solar wind plasma and likely the same plasma parcel at two radial distances. We focus on examining the intermittent character of the solar wind, providing insight into the evolving statistical distribution of structures, as well as the energy cascade rate to probe the evolving role of the turbulence in the energetics of the solar wind. The implications are examined in the context of recent measurements of the energy flux budget of the same solar wind stream by Rivera+ [(2024) Science, 385, 962-966].