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Weak gravitational lensing probes the amount, location, distribution and the power spectrum of (dark) matter without assumption on the geometry and physical properties of gravitational structures. It is therefore widely recognized as potentially a promising tool to probe the matter content of the universe at all scales. Put into the perspective of this conference, the most illustrative new results concern clusters of galaxies and cosmic shear. In the following I focus on these two topics and discuss the present status of cosmological applications of weak lensing. 相似文献
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