2004/03/04 by Mitchell C. Begelman, Mateusz Ruszkowski · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Galaxies: Formation, Evolution, Phenomena #astro-ph
paper · pdf · doi:10.1098/rsta.2004.1518
published as Phil.Trans.Roy.Soc.Lond. A363 (2005) 655-665 · 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
arxiv created 2004/03/04 · openalex publication_date 2005/01/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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 active galactic nuclei (AGN) 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. J. Binney discusses the possible role of violent, episodic heating by AGN in clusters.