Fast magnetization in counterstreaming plasmas with temperature anisotropies

TL;DR

This paper investigates how temperature anisotropies in counterstreaming plasmas accelerate filamentation instability, leading to faster magnetization, with implications for understanding magnetic field generation in astrophysical sources.

Contribution

It demonstrates that hotter plasma in the streaming direction significantly enhances filamentation instability growth rates, advancing knowledge of plasma magnetization mechanisms.

Findings

Filamentation instability speed increases with plasma temperature in streaming direction.

Hotter plasmas lead to faster magnetic field generation.

Results are relevant for astrophysical phenomena with strong magnetic fields.

Abstract

Counterstreaming plasmas exhibits an electromagnetic unstable mode of filamentation type, which is responsible for the magnetization of plasma system. It is shown that filamentation instability becomes significantly faster when plasma is hotter in the streaming direction. This is relevant for astrophysical sources, where strong magnetic fields are expected to exist and explain the nothermal emission observed.