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Signature of the interaction between dark energy and dark matter in galaxy clusters
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Signature of the interaction between dark energy and dark matter in galaxy clusters
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We investigate the influence of an interaction between dark energy and dark matter upon the dynamics of galaxy clusters. We obtain the general Layser-Irvine equation in the presence of interactions, and find how, in that case, the virial theorem stands corrected. Using optical, X-ray and weak lensing data from 33 relaxed galaxy clusters, we put constraints on the strength of the coupling in the dark sector. We find that this coupling is small but positive, indicating that dark energy can be decaying into dark matter.
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Cited by 1 Pith paper
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Testing the Dark Universe through the Layzer-Irvine Equation
Reviews the Layzer-Irvine equation and discusses its prior use in dark matter-dark energy interaction and modified gravity models while suggesting future directions.
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