Publications (16)
Modeling the Saturation of the Bell Instability Using Hybrid Simulations
Georgios Zacharegkas, Damiano Caprioli, Colby Haggerty
The nonresonant cosmic ray instability, predicted by Bell (2004), is thought to play an important role in the acceleration and confinement of cosmic rays (CRs) close to supernova r…
The Theory of Efficient Particle Acceleration at Shocks
Damiano Caprioli, Colby Haggerty, Pasquale Blasi
The recent discoveries in the theory of diffusive shock acceleration (DSA) that stem from first-principle kinetic plasma simulations are discussed. When ion acceleration is efficie…
Non-resonant Streaming Instability driven by Leptons
Siddhartha Gupta, Damiano Caprioli, Colby Haggerty
Using fully-kinetic plasma simulations, we study the non-resonant (Bell) streaming instability driven by energetic leptons. We identify the necessary conditions to drive it and the…
Relativistic Asymmetric Reconnection
Rostom Mbarek, Colby Haggerty, Lorenzo Sironi +2
We derive basic scaling equations for relativistic magnetic reconnection in the general case of asymmetric inflow conditions and obtain predictions for the outflow Lorentz factor a…
Cosmic-ray generated bubbles around their sources
Benedikt Schroer, Oreste Pezzi, Damiano Caprioli +2
Cosmic rays are thought to escape their sources streaming along the local magnetic field lines. We show that this phenomenon generally leads to the excitation of both resonant and…
The Role of Magnetic Reconnection in Energizing Protons and Heavier Ions at the Heliospheric Current Sheet
Giulia Murtas, Xiaocan Li, Fan Guo +3
During near-Sun crossings of the heliospheric current sheet (HCS), Parker Solar Probe (PSP) observed populations of high-energy protons and heavier ions indicating possible energiz…