The multi-scale nature of the solar wind

D Verscharen, KG Klein, BA Maruca - Living reviews in solar physics, 2019‏ - Springer
The solar wind is a magnetized plasma and as such exhibits collective plasma behavior
associated with its characteristic spatial and temporal scales. The characteristic length …

Recent progress in astrophysical plasma turbulence from solar wind observations

CHK Chen - Journal of Plasma Physics, 2016‏ - cambridge.org
This paper summarises some of the recent progress that has been made in understanding
astrophysical plasma turbulence in the solar wind, from in situ spacecraft observations. At …

HelioSwarm: a multipoint, multiscale mission to characterize turbulence

KG Klein, H Spence, O Alexandrova, M Argall… - Space Science …, 2023‏ - Springer
HelioSwarm (HS) is a NASA Medium-Class Explorer mission of the Heliophysics Division
designed to explore the dynamic three-dimensional mechanisms controlling the physics of …

The solar orbiter magnetometer

TS Horbury, H O'brien, IC Blazquez, M Bendyk… - Astronomy & …, 2020‏ - aanda.org
The magnetometer instrument on the Solar Orbiter mission is designed to measure the
magnetic field local to the spacecraft continuously for the entire mission duration. The need …

A Quarter Century of Wind Spacecraft Discoveries

LB Wilson III, AL Brosius, N Gopalswamy… - 2021‏ - Wiley Online Library
The Wind spacecraft, launched on November 1, 1994, is a critical element in NASA's
Heliophysics System Observatory (HSO)—a fleet of spacecraft created to understand the …

Electron-driven instabilities in the solar wind

D Verscharen, BDG Chandran, E Boella… - Frontiers in Astronomy …, 2022‏ - frontiersin.org
The electrons are an essential particle species in the solar wind. They often exhibit non-
equilibrium features in their velocity distribution function. These include temperature …

Majority of solar wind intervals support ion-driven instabilities

KG Klein, BL Alterman, ML Stevens, D Vech… - Physical review …, 2018‏ - APS
We perform a statistical assessment of solar wind stability at 1 AU against ion sources of free
energy using Nyquist's instability criterion. In contrast to typically employed threshold models …

The variable source of the plasma sheet during a geomagnetic storm

LM Kistler, K Asamura, S Kasahara, Y Miyoshi… - Nature …, 2023‏ - nature.com
Both solar wind and ionospheric sources contribute to the magnetotail plasma sheet, but
how their contribution changes during a geomagnetic storm is an open question. The source …

Electron–ion heating partition in imbalanced solar-wind turbulence

J Squire, R Meyrand, MW Kunz - The Astrophysical Journal …, 2023‏ - iopscience.iop.org
A likely candidate mechanism to heat the solar corona and solar wind is low-frequency"
Alfvénic" turbulence sourced by magnetic fluctuations near the solar surface. Depending on …

Pressure anisotropy and viscous heating in weakly collisional plasma turbulence

J Squire, MW Kunz, L Arzamasskiy… - Journal of Plasma …, 2023‏ - cambridge.org
Pressure anisotropy can strongly influence the dynamics of weakly collisional, high-beta
plasmas, but its effects are missed by standard magnetohydrodynamics (MHD). Small …