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ASCA Observations of Distant Clusters of Galaxies

Published online by Cambridge University Press:  25 May 2016

Takeshi Go Tsuru
Takeshi Go Tsuru*
Affiliation:
Department of Physics, Kyoto University Kitashirakawa-Oiwake, Sakyo, Kyoto, JAPAN, 606-01 e-mail: [email protected]

Extract

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Investigation of evolution of X-ray properties of clusters of galaxies is a key study of cosmology. The most important result in this field before ROSAT and ASCA observatories is the detection of the negative evolution of the X-ray luminosity function at red-shift lower than 0.6 (Gioia et al., 1990). Following it, many groups have been investigating evolution of X-ray luminosity function from various surveys with ROSAT observatory (eg. Collins et al., 1997). Many of them indicate no negative evolution at the red-shift lower than 0.7, which is against the Einstein result.

Type
Session 1: Plasma and Fresh Nucleosynthesis Phenomena
Information
Symposium - International Astronomical Union , Volume 188: The Hot Universe , 1998 , pp. 65 - 68
Copyright
Copyright © Kluwer 1998 

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