233 citations · 508 across the 14 of their papers we have counts for
15 papers
Electron-Positron Pair Loading and the Origin of the Upstream Magnetic Field in GRB Shocks
Enrico Ramirez-Ruiz, Ken-Ichi Nishikawa, Christian B. Hededal
We investigate here the effects of plasma instabilities driven by rapid electron/positron pair cascades, which arise in the environment of GRB sources as a result of back-scatterin…
Gamma-Ray Burst Synthetic Spectra from Collisionless Shock PIC Simulations
Christian Busk Hededal, Åke Nordlund
The radiation from afterglows of gamma-ray bursts is generated in the collisionless plasma shock interface between a relativistic outflow and a quiescent circum-burst medium. The t…
Acceleration Mechanics in Relativistic Shocks by the Weibel Instability
K. -I. Nishikawa, P. E. Hardee, C. B. Hededal +1
Plasma instabilities (e.g., Buneman, Weibel and other two-stream instabilities) created in collisionless shocks may be responsible for particle (electron, positron, and ion) accele…
Particle acceleration in electron-ion jets
K. -I. Nishikawa, P. Hardee, C. B. Hededal +6
Weibel instability created in collisionless shocks is responsible for particle (electron, positron, and ion) acceleration. Using a 3-D relativistic electromagnetic particle (REMP)…
Gamma-Ray Bursts, Collisionless Shocks and Synthetic Spectra
Christian Hededal
The radiation from afterglows of gamma-ray bursts (GRB) is generated in collisionless plasma shocks. The two main ingredients behind the radiation are high-energy, non-thermal elec…
Weibel Instability Driven by Relativistic Pair Jets: Particle Acceleration, Magnetic Field Generation, and Emission
K. -I. Nishikawa, P. Hardee, C. B. Hededal +4
Shock acceleration is a ubiquitous phenomenon in astrophysical plasmas. Plasma waves and their associated instabilities (e.g., Buneman, Weibel and other two-stream instabilities) c…