Title: "Hot Intergalactic Gas in Clusters of Galaxies, Cosmic Microwave Background and Cosmology" Abstract:Clusters of galaxies are the most massive objects in our Universe. Each of them contains dark matter, thousands of galaxies and is filled with hot intergalactic gas radiating in X-rays. Huge gravitational potential converts clusters of galaxies into excellent gravitational lenses able to amplify the light from very distant galaxies behind them.
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