Revisit of cosmic age problem

Abstract

We investigate the cosmic age problem associated with 9 extremely old globular clusters in M31 galaxy and 1 very old high-$z$ quasar APM 08279 + 5255 at $z=3.91$. These 9 globular clusters have not been used to study the cosmic age problem in the previous literature. By evaluating the age of the universe in the $\Lambda$CDM model with the observational constraints from the SNIa, the BAO, the CMB, and the independent $H_0$ measurements, we find that the existence of 5 globular clusters and 1 high-$z$ quasar are in tension (over 2$\sigma$ confidence level) with the current cosmological observations. So if the age estimates of these objects are correct, the cosmic age puzzle still remains in the standard cosmology. Moreover, we extend our investigations to the cases of the interacting dark energy models. It is found that although the introduction of the interaction between dark sectors can give a larger cosmic age, the interacting dark energy models still have difficulty to pass the cosmic age test.

11 pages, 5 figures, 1 table, accepted for publication in PRD

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• Power-law Parameterized Quintessence Model

Cited by in corpus (4)

• Exploring the Latest Union2 SNIa Dataset by Using Model-Independent Parametrization Methods
• Probing Cosmic Acceleration by Using the SNLS3 SNIa Dataset
• Dark Energy Cosmology with the Alternative Cosmic Microwave Background Data
• Theory MOND in a Friedmann-Robertson-Walker Cosmology as alternative to the Nonbaryonic Dark Matter paradigm