Sensitivity and Insensitivity of Galaxy Cluster Surveys to New Physics

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We study the implications and limitations of galaxy cluster surveys for constraining models of particle physics and gravity beyond the Standard Model. Flux limited cluster counts probe the history of large scale structure formation in the universe, and as such provide useful constraints on cosmological parameters. As a result of uncertainties in some aspects of cluster dynamics, cluster surveys are currently more useful for analyzing physics that would affect the formation of structure than physics that would modify the appearance of clusters. As an example we consider the Lambda-CDM cosmology and dimming mechanisms, such as photon-axion mixing.
24 pages, 8 eps figures. References added, discussion of scatter in relations between cluster observables lengthened

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High Energy Physics - Phenomenology, Astrophysics

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http://salesiana.dossiersoluciones.com/handle/123456789/193698

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0709.3442
 http://arxiv.org/abs/0709.3442
 JCAP0803:006,2008
 doi:10.1088/1475-7516/2008/03/006

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arXiv