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Density jump for oblique collisionless shocks in pair plasmas: allowed solutions
Antoine Bret, Ramesh Narayan
Shockwaves in plasma are usually dealt with using Magnetohydrodynamics (MHD). Yet, MHD entails the assumption of a short mean free path, which is not fulfilled in a collisionless p…
Density jump as a function of magnetic field for switch-on collisionless shocks in pair plasmas
Antoine Bret, Ramesh Narayan
The properties of collisionless shocks, like the density jump, are usually derived from magnetohydrodynamics (MHD), where isotropic pressures are assumed. Yet, in a collisionless p…
Building a weak shockwave from linear modes
Antoine Bret, Ramesh Narayan
In shockwave theory, the density, velocity and pressure jumps are derived from the conservation equations. Here, we address the physics of a weak shock the other way around. We fir…
Density jump as a function of magnetic field strength for parallel collisionless shocks in pair plasmas
Antoine Bret, Ramesh Narayan
Collisionless shocks follow the Rankine-Hugoniot jump conditions to a good approximation. However, for a shock propagating parallel to a magnetic field, magnetohydrodynamics states…
Kinetic inhibition of MHD-shocks in the vicinity of a parallel magnetic field
Antoine Bret, Asaf Pe'er, Lorenzo Sironi +2
According to magnetohydrodynamics (MHD), the encounter of two collisional magnetized plasmas at high velocity gives rise to shock waves. Investigations conducted so far have found…
Collisionless Weibel shocks: full formation mechanism and timing
Antoine Bret, Anne Stockem, Ramesh Narayan +1
Collisionless shocks in plasmas play an important role in space physics (Earth's bow shock) and astrophysics (supernova remnants, relativistic jets, gamma-ray bursts, high energy c…