Investigating the radial evolution of solar wind structures with PSP’s 11th Encounter

Authors: S.D. Bale, T. S. Horbury, L.Matteini, T. Woolley, J. Stawarz, L.D. Woodham

Parker Solar Probe’s (PSP’s) 11th encounter in February 2022 has provided a wonderful opportunity to study the radial evolution of the solar wind since it is in conjunction with Solar Orbiter (SO at 0.5AU) and Earth (1AU). We present this encounter, and show that we can identify the same plasma parcel measured by both PSP and SO. Such identification is useful for studies of the solar wind turbulence and kinetics, since it represents solar wind measured from the same source location and emitted at the same time. We also focus on the evolution of the solar wind  structures between these spacecraft, utilizing both in situ and remote sensing observations.