Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2009-06-15
Astrophys.J.708:462-468,2010
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
Submitted to Astrophysical Journal Letters. Movie versions of the figures are available at http://www.astro.wisc.edu/~heinzs
Scientific paper
10.1088/0004-637X/708/1/462
One of the legacies of the {\rm Chandra} era is the discovery of AGN-inflated X-ray cavities in virtually all cool-core clusters, with mechanical luminosities comparable to or larger than the cluster cooling rate, suggesting that AGN might be responsible for heating clusters. This discovery poses a new set of questions that cannot be addressed by X-ray imaging or modeling alone: Are AGN actually responsible for halting cooling flows? How is the AGN energy transferred to heat? How tight is the observed balance between heating and cooling? Using numerical simulations and a new virtual X-ray observatory tool, we demonstrate that high-resolution, high-throughput X-ray spectroscopy can address these questions and that the International X-ray Observatory \ixo will have the necessary capabilities to deliver these measurements.
Brueggen Marcus
Heinz Sebastian
Morsony Brian
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