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Vector dark energy and high-z massive clusters
Article first published online: 4 OCT 2011
DOI: 10.1111/j.1365-2966.2011.19660.x
© 2011 The Authors. Monthly Notices of the Royal Astronomical Society © 2011 RAS
Issue
Monthly Notices of the Royal Astronomical Society
Volume 418, Issue 4, pages 2715–2719, December 2011
Additional Information
How to Cite
Carlesi, E., Knebe, A., Yepes, G., Gottlöber, S., Jiménez, J. B. and Maroto, A. L. (2011), Vector dark energy and high-z massive clusters. Monthly Notices of the Royal Astronomical Society, 418: 2715–2719. doi: 10.1111/j.1365-2966.2011.19660.x
Publication History
- Issue published online: 8 DEC 2011
- Article first published online: 4 OCT 2011
- Accepted 2011 August 18. Received 2011 July 7
- Abstract
- Article
- References
- Cited By
Keywords:
- methods: numerical;
- galaxies: haloes;
- cosmology: theory;
- dark matter
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 Λ 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.