Kink-Driven Turbulence and Particle Acceleration in Astrophysical Jets

Recent observations have revealed that jets driven by black holes in our Galaxy, such as SS433, can produce gamma-ray emissions up to several hundred TeVs, implying that particles up to PeV energies are present in such systems. Furthermore, polarized X-ray emissions with high polarization fraction are observed in SS433, implying that its jets possess large-scale coherent magnetic fields which are shown to be parallel to the jet direction. We show that current-driven kink instabilities play an important role in such jets. We present detailed MHD simulations to quantity the properties of kink-driven turbulence and investigate the associated particle acceleration in such systems. We apply these results to determine the emission and polarization properties and compare with multi-wavelength observations. (LA-UR-25-26965)