Counter-Streaming Beams in Collisionless Pair Plasma Instability Systems III: Collisionless Heating, Acceleration, and Radiation

TL;DR

This paper investigates how filament mergers in collisionless pair plasmas driven by the Weibel instability lead to particle acceleration, heating, and radiation, enhancing understanding of energetic astrophysical phenomena.

Contribution

It provides new insights into the energy transfer, particle acceleration, and radiation mechanisms during filament mergers in collisionless plasmas, focusing on the Weibel instability.

Findings

Filament mergers cause significant particle acceleration and heating.

Radiative processes include jitter and synchrotron radiation.

Energy transformations influence astrophysical shock emissions.

Abstract

Energetic astrophysical phenomena, such as $\gamma$-ray bursts and supernova explosion-driven shocks in collisionless plasmas, involve various plasma kinetic instabilities, such as the Weibel instability. These systems support various types of particle acceleration and radiation through a variety of mechanisms. In this paper, we explore the energy transformations and dynamical effects of violent filament mergers seen between the large current filaments formed by the Weibel instability. The radiative processes involved in the Weibel instability filament building are also discussed in relation to jitter and synchrotron radiation.