Modelling magnetically dominated and radiatively cooling jets
Martin Huarte-Espinosa, Adam Frank, Eric Blackman (University of, Rochester)
TL;DR
This paper uses 3D-MHD simulations to compare the evolution of magnetically dominated, radiatively cooling jets with adiabatic ones, revealing differences in collimation and stability relevant to astrophysical and laboratory contexts.
Contribution
It introduces a detailed numerical study of magnetic tower jets with radiative cooling, highlighting structural and stability differences from adiabatic jets.
Findings
Radiative cooling enhances jet collimation.
Both jet types exhibit pinch instabilities.
Structural similarities to laboratory magnetic towers.
Abstract
Using 3D-MHD Eulerian-grid numerical simulations, we study the formation and evolution of rising magnetic towers propagating into an ambient medium. The towers are generated from a localized injection of pure magnetic energy. No rotation is imposed on the plasma. We compare the evolution of a radiatively cooling tower with an adiabatic one, and find that both bend due to pinch instabilities. Collimation is stronger in the radiative cooling case; the adiabatic tower tends to expand radially. Structural similarities are found between these towers and the millimeter scale magnetic towers produced in laboratory experiments.
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