| 书目名称 | Heating versus Cooling in Galaxies and Clusters of Galaxies | | 副标题 | Proceedings of the M | | 编辑 | H. Böhringer,G.W. Pratt,P. Schuecker | | 视频video | | | 概述 | A state-of-the-art report on heating and cooling mechanisms in galaxies and galaxiy clusters. | | 丛书名称 | ESO Astrophysics Symposia | | 图书封面 |  | | 描述 | The Universe would be a dull and dark place if the gaseous baryons did not cool, collapse, and form stars and galaxies. However, if this gas is allowed to cool unimpeded at the rate predicted from known atomic physics, in the context of a well-established cosmological model, the gaseous matter would form stars and galaxies with a high e?ciency, so that far more than the observed fraction of about 10–15% of the baryonic matter would be found in luminous stellar systems. Therefore,cooling must be damped or regulatedby heating processes, and observations show that this ‘feedback’ is a widespread astrophysical phenomenon. The place where this cooling and feedback manifests itself most dram- ically is in the inner regions of the most massive Dark Matter halos found in our Universe, in the cores of galaxy clusters. The e?ect of cosmic co- ing in these objects was recognized in the mid-1970s, and the term ‘cooling ?ow’ was introduced by Andy Fabian and colleagues at Cambridge as a p- sible explanation of the physical processes obtained in the central regions of clusters. The name refers to the fact that gas cooling in the inner regions is associated with a loss of central pressure, causin | | 出版日期 | Conference proceedings 2007 | | 关键词 | Astrophysical Cooling Cores; Cluster Cooling Cores; Cosmic Structure Formation; Galaxy; Galaxy Clusters; | | 版次 | 1 | | doi | https://doi.org/10.1007/978-3-540-73484-0 | | isbn_softcover | 978-3-642-09257-2 | | isbn_ebook | 978-3-540-73484-0Series ISSN 1431-2433 Series E-ISSN 1611-6143 | | issn_series | 1431-2433 | | copyright | Springer-Verlag Berlin Heidelberg 2007 |
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发表于 2025-3-21 16:58:32
