15 citations · 16 across the 4 of their papers we have counts for
7 papers
The impact of nonlinear Landau damping on cosmic ray streaming and the role of external turbulence
Rouven Lemmerz, Mohamad Shalaby, Ellen Zweibel +2
Cosmic rays (CRs) streaming faster than the Alfvén speed generate Alfvén waves that scatter them. The saturated wave amplitude is regulated by a damping mechanism. This damping con…
Saturation Mechanism of Cosmic Ray Streaming Instabilities with a Shell Distribution
Mohamad Shalaby, Rouven Lemmerz, Christoph Pfrommer
Cosmic rays (CRs) drive galactic winds and regulate galaxy growth while contributing to heating the central cooling plasma in dense galaxy clusters, making the nonlinear saturation…
Effective cosmic ray diffusion in multiphase galactic environments
Timon Thomas, Christoph Pfrommer, Rüdiger Pakmor +2
Cosmic-ray (CR) feedback is widely recognized as a key regulator of galaxy formation. After being accelerated at supernova remnant shocks, CRs propagate through the interstellar me…
The theory of resonant cosmic ray-driven instabilities -- Growth and saturation of single modes
Rouven Lemmerz, Mohamad Shalaby, Christoph Pfrommer +1
Cosmic ray (CR) feedback is critical for galaxy formation as CRs drive galactic winds, regularize star formation in galaxies, and escape from active galactic nuclei to heat the coo…
Deciphering the physical basis of the intermediate-scale instability
Mohamad Shalaby, Timon Thomas, Christoph Pfrommer +2
We study the underlying physics of cosmic-ray (CR) driven instabilities that play a crucial role for CR transport across a wide range of scales, from interstellar to galaxy cluster…
Coupling multi-fluid dynamics equipped with Landau closures to the particle-in-cell method
Rouven Lemmerz, Mohamad Shalaby, Timon Thomas +1
The particle-in-cell (PIC) method is successfully used to study magnetized plasmas. However, this requires large computational costs and limits simulations to short physical run-ti…
The mechanism of efficient electron acceleration at parallel non-relativistic shocks
Mohamad Shalaby, Rouven Lemmerz, Timon Thomas +1
Thermal electrons cannot directly participate in the process of diffusive acceleration at electron-ion shocks because their Larmor radii are smaller than the shock transition width…