Mechanical heating by active galaxies
arXiv:astro-ph/0403128 · doi:10.1098/rsta.2004.1518
Abstract
Jets and winds are significant channels for energy loss from accreting black holes. These outflows mechanically heat their surroundings, through shocks as well as gentler forms of heating. We discuss recent efforts to understand the nature and distribution of mechanical heating by central AGNs in clusters of galaxies, using numerical simulations and analytic models. Specifically, we will discuss whether the relatively gentle `effervescent heating' mechanism can compensate for radiative losses in the central regions of clusters, and account for the excess entropy observed at larger radii.
10 pages, no figures. Submitted to Philosophical Transactions of the Royal Society (Series A: Mathematical, Physical and Engineering Sciences), proceedings of the Poyal Society Discussion Meeting on the Impact of Active Galaxies on the Universe at Large, London, February 16-17, 2004
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