Speaker
Description
Active galactic nuclei (AGN) inject enormous amounts of energy into their environments through relativistic jets, cosmic rays (CRs), and magnetized outflows, producing spectacular non-thermal structures from the Fermi/eROSITA bubbles in the Milky Way and newly discovered odd radio circles (ORCs). The evolution and emission properties of these systems are strongly influenced by plasma microphysics, including CR transport, turbulence, viscosity, and magnetic-field geometry.
In this talk, I will discuss recent progress in understanding how CRs and AGN jets shape high-energy observables using advanced CR-magnetohydrodynamic simulations. I will focus on the origin of the Fermi/eROSITA bubbles and ORCs, emphasizing the roles of plasma microphysics in determining the morphology, dynamics, and multi-wavelength emission of astrophysical bubbles.
These studies demonstrate how high-energy observations can probe otherwise inaccessible plasma processes and how multi-scale simulations help bridge microscopic particle transport physics and macroscopic astrophysical phenomena.