Kavli Affiliate: Feng Yuan
| First 5 Authors: Aoyun He, Aoyun He, , ,
| Summary:
Active galactic nucleus (AGN) feedback is widely viewed as the most promising
solution to the long-standing cooling flow problem in galaxy clusters, yet
previous models prescribe jet properties inconsistent with accretion physics.
We perform high-resolution hydrodynamic simulations of a Perseus-like cluster
using the MACER framework, incorporating both jets and winds constrained by
general relativistic magnetohydrodynamic simulations and observations. The
combined feedback reproduces key observables–including cold gas mass, star
formation rate, thermodynamic radial profiles, and black hole growth–while
jet-only or wind-only models fail. The success arises from turbulence driven by
jet-wind shear that enhances kinetic-to-thermal energy conversion, boosting
heating efficiency by factors of three and six relative to wind-only and
jet-only cases, respectively, yielding a self-consistent solution to cluster
cooling flows.
| Search Query: ArXiv Query: search_query=au:”Feng Yuan”&id_list=&start=0&max_results=3