Jets, galactic outflows and the circumgalactic mediumAstrophysics Seminar

by Prof. Prateek Sharma (Department of Physics, IISc)

Tuesday Jul 9, 2024, 3:30 PM → 4:30 PM Asia/Kolkata

Auditorium

In galaxy formation on the scale of the large scale structure (>~ 10 Mpc), baryons follow dark matter, the dominant matter component in the Universe. On smaller scales, this breaks down - important baryonic processes such as radiative cooling and energy injection by supernovae and active galactic nuclei (AGNs) become important. After giving a broad overview, I'll describe our recent work [1] (arXiv:2401.00446) on the interaction of a conical AGN jet with a clumpy medium. I'll present the physics of jet collimation by the pressure of the surrounding cocoon and how the anisotropic cocoon becomes an isotropic outflow in the presence of a sufficiently clumpy medium. I'll end with the implications of this work for Fermi/eRosita Bubbles in the center of our Milky Way, Seyfert jets, and jets/bubbles in galaxy clusters.