Wednesday

Feedback in the form of powerful jets plays an important role in galaxy cluster evolution, where the large lobes of relativistic plasma they inflate are critical in regulating the heating and cooling of the intracluster medium (ICM). However, the modus operandi of communicating the mechanical energy of the jets isotropically to the ICM remains an open question. Given the large dynamic range in the processes governing AGN feedback and its interaction with the ICM, attempting to simulate all of the relevant scales is a formidable task. I will discuss jet feedback simulations using the moving-mesh code AREPO.The method relies upon a super-Lagrangian refinement technique that provides vastly improved resolution near the SMBH while allowing courser resolution on larger scales. The technique means we can launch jets on relatively small scales and capture their propagation and evolution to large distances (∼100 kpc). I will present results from our most recent works in which we investigate jet evolution in realistic cluster environments. Using our novel method we launch very high-resolution jets into fully cosmologically evolved zoom simulations of galaxy clusters at both high- and low-redshifts, for a range of jet powers. I will discuss how and where the feedback energy is deposited in the ICM, turbulence driving (or lack thereof), as well as the role ICM weather has on distributing the energy. Additionally I will present mock X-ray observations in order to compare with real systems, including comparisons to Hitomi observations of the Perseus cluster.