Collisionless shocks, that is shocks mediated by electromagnetic processes, are customary
in space physics and in astrophysics. They are to be found in a great variety of objects and …

Dayside transients, such as hot flow anomalies, foreshock bubbles, magnetosheath jets, flux
transfer events, and surface waves, are frequently observed upstream from the bow shock …

A transition between the supersonic solar wind and the subsonic heliosheath was observed
by Voyager 1, but the expected termination shock was not seen owing to a gap in the …

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 …

High‐resolution particle and wave measurements taken during an oblique bow shock
crossing by the Magnetospheric Multiscale (MMS) mission are analyzed. Two regions of …

The physics of collisionless shocks is a very broad topic which has been studied for more
than five decades. However, there are a number of important issues which remain …

When the interplanetary magnetic field is oriented such that the angle between the upstream
magnetic field and the nominal bow shock normal is small (θBn< 45◦), a much more complex …

Heliospheric energetic neutral atoms (ENAs) that will be measured by the Interstellar
Boundary Explorer (IBEX) originate from the heliosheath. The heliosheath is formed as a …

Context. We study the solar energetic particle (SEP) event observed on 9 October 2021 by
multiple spacecraft, including Solar Orbiter. The event was associated with an M1. 6 flare, a …

High‐speed jets (HSJs) are frequently observed downstream of a quasi‐parallel bow shock,
and they are considered to play important roles in the coupling of the solar wind, the …