INEFFICIENT DRIVING OF BULK TURBULENCE BY ACTIVE GALACTIC NUCLEI IN A HYDRODYNAMIC MODEL OF THE INTRACLUSTER MEDIUM

• Published in: The Astrophysical journal Vol. 815; no. 1; pp. 41 - 51
• Main Authors: Reynolds, Christopher S., Balbus, Steven A., Schekochihin, Alexander A.
• Format: Journal Article
• Language: English
• Published: United States The American Astronomical Society 10.12.2015
• Subjects: Active galactic nuclei; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; Computational fluid dynamics; COMPUTERIZED SIMULATION; COOLING; EFFICIENCY; EXCITATION; Fluid flow; Galactic clusters; GALAXIES; galaxies: clusters: intracluster medium; GALAXY CLUSTERS; GALAXY NUCLEI; GRAVITY WAVES; HEAT; HEAT SOURCES; HYDRODYNAMICS; KINETIC ENERGY; TRAPPING; TURBULENCE; Turbulent flow

ABSTRACT Central jetted active galactic nuclei (AGNs) appear to heat the core regions of the intracluster medium (ICM) in cooling-core galaxy clusters and groups, thereby preventing a cooling catastrophe. However, the physical mechanism(s) by which the directed flow of kinetic energy is thermalized...