COMBINING SEMIANALYTIC MODELS WITH SIMULATIONS OF GALAXY CLUSTERS: THE NEED FOR HEATING FROM ACTIVE GALACTIC NUCLEI

Journal Article · Tue Oct 20 00:00:00 EDT 2009 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/704/2/915· OSTI ID:21367397

Short, C J

We present hydrodynamical N-body simulations of clusters of galaxies with feedback taken from semianalytic models of galaxy formation. The advantage of this technique is that the source of feedback in our simulations is a population of galaxies that closely resembles that found in the real universe. We demonstrate that, to achieve the high entropy levels found in clusters, active galactic nuclei must inject a large fraction of their energy into the intergalactic/intracluster media throughout the growth period of the central black hole. These simulations reinforce the argument of Bower et al., who arrived at the same conclusion on the basis of purely semianalytic reasoning.

• OSTI ID: 21367397
• Journal Information: Astrophysical Journal, Vol. 704, Issue 2; Other Information: DOI: 10.1088/0004-637X/704/2/915; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
BLACK HOLES
ENTROPY
GALAXY CLUSTERS
GALAXY NUCLEI
HYDRODYNAMICS
SIMULATION
UNIVERSE
X-RAY GALAXIES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
FLUID MECHANICS
GALAXIES
MECHANICS
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES