Vector dark energy and high-z massive clusters
Loading...
Download
Official URL
Full text at PDC
Publication date
2011
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Oxford University Press
Citations
Exportar
Citation
Abstract
The detection of extremely massive clusters at z > 1 such as SPT-CL J0546-5345, SPT-CL J2106-5844 and XMMU J2235.3 2557 has been considered by some authors as a challenge to the standard ? cold dark matter cosmology. In fact, assuming Gaussian initial conditions, the theoretical expectation of detecting such objects is as low as =1 per cent. In this paper we discuss the probability of the existence of such objects in the light of the vector dark energy paradigm, showing by means of a series of N-body simulations that chances of detection are substantially enhanced in this non-standard framework.
Description
© 2011 The Authors. Monthly Notices of the Royal Astronomical Society.
EC is supported by the MareNostrum project funded by the Spanish Ministerio de Ciencia e Innovacion (MICINN) under grant no. AYA2009-13875-C03-02 and MultiDark Consolider project under grant CSD2009-00064. AK acknowledges support by the MICINN's Ramon y Cajal programme as well as the grants AYA 2009-13875-C03-02, AYA2009-12792-C03-03, CSD2009 00064, and CAM S2009/ESP-1496. GY acknowledges support from MICINN's grants AYA2009 13875-C03-02 and FPA2009-08958. JBJ is supported by the Ministerio de Educacion under the post doctoral contract EX2009-0305 and also wishes to acknowledge support from the Norwegian Research Council under the YGGDRASIL programme 2009-2010 and the NILS mobility project grant UCM-EEA-ABEL-03-2010. We also acknowledge support from MICINN (Spain) project numbers FIS 2008-01323, FPA 2008-00592 and CAM/UCM 910309.