3 papers
physics.plasm-ph2022
The electron foreshock at high-Mach-number nonrelativistic oblique shocks
Artem Bohdan, Martin S. Weidl, Paul J. Morris +1
In the Universe matter outside of stars and compact objects is mostly composed of collisionless plasma. The interaction of a supersonic plasma flow with an obstacle results in coll…
physics.plasm-ph2018
On the background-gyroresonant character of the Bell instability
Martin S. Weidl, Dan Winske, Christoph Niemann
We show that the Bell instability, which is widely considered potentially important for cosmic-ray acceleration, is the low-frequency limit of a gyroresonant interaction between th…
physics.plasm-ph2018
How it cramps the flow: three regimes for the saturation of parallel ion-beam instabilities
Martin S. Weidl, Dan Winske, Christoph Niemann
Motivated by recent advances in laboratory experiments on parallel ion-beam instabilities, we present a theoretical framework for and simulations of their evolution towards shock f…