Simulations of Collisionless Perpendicular Shocks in Partially Ionized Plasmas

Abstract

Perpendicular collisionless shocks propagating into partially ionized plasmas are investigated by two-dimensional hybrid particle simulations. It is shown that some neutral particles leak into the upstream region from the downstream region, the leaking neutral particles become pickup ions in the upstream region and modify the shock structure, the pickup ions are preferentially accelerated, and plasma instabilities are excited by the pickup ions in the upstream and downstream regions.

4 pages, 5 figures, accepted for publication in PRL

References in corpus (7)

• Cosmic-ray-induced filamentation instability in collisionless shocks
• Balmer-Dominated Shocks Revisited
• The Heating of Thermal Electrons in Fast Collisionless Shocks: The Integral Role of Cosmic Rays
• Collisionless shocks in a partially ionized medium: III. Efficient cosmic ray acceleration
• Oblique Ion Two-Stream Instability in the Foot Region of a Collisionless Shock
• Absence of Electron Surfing Acceleration in a Two-Dimensional Simulation
• Non-Maxwellian Proton Velocity Distributions in Nonradiative Shocks

Cited by in corpus (19)

• On cosmic-ray production efficiency at supernova remnant shocks propagating into realistic diffuse interstellar medium
• Cosmic-Ray Hardenings in the Light of AMS-02
• Injection to rapid diffusive shock acceleration at perpendicular shocks in partially ionized plasmas
• Magnetic field amplification by collisionless shocks in partially ionized plasmas
• Weibel-Mediated Shocks Propagating into Inhomogeneous Electron-Positron Plasmas
• Spatially-Resolved Spectroscopy of a Balmer-Dominated Shock in the Cygnus Loop: An Extremely Thin Cosmic-Ray Precursor?
• Origin and Impacts of the First Cosmic Rays
• Weibel instability driven by spatially anisotropic density structures
• Acoustic instability in the neutral precursor region of collisionless shocks propagating into partially ionized plasmas
• The Biermann battery driven by a streaming plasma
• Magnetic field generation by an inhomogeneous return current
• Fast Particle Acceleration at Perpendicular Shocks with Uniform Upstream Magnetic Field and Strong Downstream Turbulence
• Diffusive shock acceleration at oblique high Mach number shocks
• Polarized Balmer Line Emission from Supernova Remnant Shock Waves Efficiently Accelerating Cosmic Rays
• X-ray Line Diagnostics of Ion Temperature at Cosmic-Ray Accelerating Collisionless Shocks
• Radiative transfer of hydrogen lines from supernova remnant shock waves: contributions of 2s-state hydrogen atoms
• Collisionless shocks having relativistic velocities in relativistically hot plasmas
• Magnetic field generation by charge exchange in a supernova remnant in the early universe
• Escape of cosmic rays from perpendicular shocks in the interstellar magnetic field