Energetic particles represent an important component of the plasma in the heliosphere.
They range from particles accelerated at impulsive events in the solar corona and at large …

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 …

After decades of observations of solar energetic particles from space-based observatories,
relevant questions on particle injection, transport, and acceleration remain open. To address …

Shock waves, as shown by simulations and observations, can generate high levels of
downstream vortical turbulence, including magnetic islands. We consider a combination of …

Models for cosmic ray (CR) dynamics fundamentally depend on the rate of CR scattering
from magnetic fluctuations. In the ISM, for CRs with energies∼ MeV-TeV, these fluctuations …

While observations have suggested that power-law electron energy spectra are a common
outcome of strong energy release during magnetic reconnection, eg, in solar flares, kinetic …

Observed turbulence in space and astrophysics is expected to involve cascade and
subsequent dissipation and heating. Contrary to standard collisional fluid turbulence, the …

In strongly magnetized astrophysical plasma systems, magnetic reconnection is believed to
be the primary process during which explosive energy release and particle acceleration …

Magnetic reconnection is a primary mechanism for particle energization in space and
astrophysical plasmas. By carrying out two-dimensional (2D) fully kinetic simulations, we …

Increases of ion fluxes in the keV–MeV range are sometimes observed near the heliospheric
current sheet (HCS) during periods when other sources are absent. These resemble solar …