2011MNRAS.412L...1B

Query : 2011MNRAS.412L...1B

2011MNRAS.412L...1B - Mon. Not. R. Astron. Soc., 412, L1-L5 (2011/March-3)

High-z massive clusters as a test for dynamical coupled dark energy.

BALDI M. and PETTORINO V.

Abstract (from CDS):

The recent detection by Jee et al. of the massive cluster XMMU J2235.3-2557 at a redshift z≈ 1.4, with an estimated mass M324= (6.4 ±1.2) {x} 1014 M☉, has been claimed to be a possible challenge to the standard ΛCDM cosmological model. More specifically, the probability to detect such a cluster has been estimated to be ∼0.005 if a ΛCDM model with Gaussian initial conditions is assumed, resulting in a 3σ discrepancy from the standard cosmological model. In this Letter we propose to use high-redshift clusters as the one detected in Jee et al. to compare the cosmological constant scenario with interacting dark energy models. We show that coupled dark energy models, where an interaction is present between dark energy and cold dark matter, can significantly enhance the probability to observe very massive clusters at high redshift.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): cosmology: observations - cosmology: theory

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ClG J2235-2557 ClG 22 35 20.6 -25 57 42           ~ 151 0

Query : 2011MNRAS.412L...1B

Basic data :
ClG J2235-2557 -- Cluster of Galaxies
Other object types: otypes_help 		ClG (2012MNRAS,ClG,...), C?G (2012MNRAS,XCLASS), X (1WGA,XMMU), gLe (2013MNRAS)
ICRS coord. (ep=J2000) : 		22 35 20.6 -25 57 42 [ ] E 2005ApJ...623L..85M
FK4 coord. (ep=B1950 eq=1950) : 		22 32 34.8 -26 13 15 [ ]
Gal coord. (ep=J2000) : 		027.2757 -59.6333 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 210463 [~] / z(spectroscopic) 1.39 [~] / cz 416712 [~]
   (Opt) D 2012MNRAS.423.1024M
Angular size (arcmin): 		1.666666627 1.666666627 0 (Xray) E 2021A&A...652A..12K
Fluxes (2) :
J 19.277 [~] C 2013MNRAS.433..825L
K 17.317 [0.026] C 2013MNRAS.433..825L
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Hierarchy : number of linked objects
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: 107 		Display criteria :

Identifiers (9) :
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ClG J2235-2557 XCLASS 2062 XMMU J223520.6-255743
NAME XMMU J2235.3-2557 XDCP J2235.3-2557 XMMXCS J223520.4-255742.1
1WGA J2235.3-2557 XMMU J223520.6-255742 XMMXCS J2235.3-2557

References (151 between 1850 and 2026) (Total 151)
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