Observational constraints on interacting dark matter model without dark energy

Cao, Shuo; Zhu, Zong-Hong; Liang, Nan

doi:10.1051/0004-6361/201016204

Cited by 31 publications

(33 citation statements)

References 89 publications

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“…We also find that the confidence regions of H ( z )+BAO+CMB, SNe+BAO+CMB and H ( z )+SNe+BAO+CMB are consistent with each other. This situation is similar to that obtained in Cao et al (2011) for constraining the IDM scenario with H ( z )+SNe data.…”

Section: Constraint On the Phenomenological Interacting Scenariosupporting

confidence: 88%

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Testing the phenomenological interacting dark energy with observational H(z) data

Cao

Liang

Zhu

2011

Monthly Notices of the Royal Astronomical Society

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In order to test the possible interaction between dark energy and dark matter, we investigate observational constraints on a phenomenological scenario, in which the ratio between the dark energy and matter densities is proportional to the power‐law case of the scalefactor, r≡ (ρX/ρm) ∝aξ. By using the Markov chain Monte Carlo method, we constrain the phenomenological interacting dark energy model with the newly revised H(z) data, as well as the cosmic microwave background (CMB) observation from the 7‐year Wilkinson Microwave Anisotropy Probe (WMAP7) results, the baryonic acoustic oscillation (BAO) observation from the spectroscopic Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) galaxy sample and the Type Ia supernovae (SNe Ia) from the Union2 set. The best‐fitting values of the model parameters are Ωm0= 0.27+0.02−0.02 (1σ)+0.04−0.03 (2σ), ξ= 3.15+0.48−0.50(1σ)+0.72−0.71(2σ) and wX=−1.05+0.15−0.14(1σ)+0.21−0.21(2σ), which are more stringent than previous results. These results show that the standard Λ cold dark matter (ΛCDM) model without any interaction remains a good fit to the recent observational data; however, the interaction that the energy transferring from dark matter to dark energy is slightly favoured over the interaction from dark energy to dark matter. It is also shown that the H(z) data can give more stringent constraints on the phenomenological interacting scenario when combined with CMB and BAO observations, and the confidence regions of H(z)+BAO+CMB, SNe+BAO+CMB and H(z)+SNe+BAO+CMB combinations are consistent with each other.

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Section: Constraint On the Phenomenological Interacting Scenariosupporting

confidence: 88%

“…The integral cannot take the fine structure of H ( z ) into consideration and lose some important information compiled in it. Therefore, it is more rewarding to investigate the observational H ( z ) data directly (Cao, Zhu & Liang 2011).…”

Section: Introductionmentioning

confidence: 99%

Testing the phenomenological interacting dark energy with observational H(z) data

Cao

Liang

Zhu

2011

Monthly Notices of the Royal Astronomical Society

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“…Recently, H ( z ) data at 11 different redshifts based on the differential ages of red‐envelope galaxies were reported by Stern et al (2010) while three more H ( z ) data points were obtained by Gaztanaga, Cabre & Hui (2009). The newly obtained H ( z ) data points have been used to constrain parameters of various cosmological models (Paul, Thakur & Ghose 2010; Yang & Zhang 2010; Cao, Zhu & Liang 2011; Chen & Ratra 2011; Paul, Ghose & Thakur 2011). Here, we use 13 observational H ( z ) data points given in table 1 of Chen & Ratra (2011) and the one at z = 0 estimated in the work by Riess et al (2011).…”

Section: Constraints From Observational Hz Datamentioning

confidence: 99%

Observational constraints on Hubble constant and deceleration parameter in power-law cosmology

Kumar

2012

Monthly Notices of the Royal Astronomical Society

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In this paper, we show that the expansion history of the Universe in power‐law cosmology essentially depends on two crucial parameters, namely the Hubble constant H0 and deceleration parameter q. We find the constraints on these parameters from the latest H(z) and SNe Ia data. At 1σ level the constraints from H(z) data are obtained as and km s−1 Mpc−1, while the constraints from the Type Ia supernovae (SNe Ia) data are and km s−1 Mpc−1. We also perform the joint test using H(z) and SNe Ia data, which yields the constraints and km s−1 Mpc−1. The estimates of H0 are found to be in close agreement with some recent probes carried out in the literature. The analysis reveals that the observational data successfully describe the cosmic acceleration within the framework of power‐law cosmology. We find that the power‐law cosmology accommodates well the H(z) and SNe Ia data. We also test the power‐law cosmology using the primordial nucleosynthesis, which yields the constraints q≳ 0.72 and H0≲ 41.49 km s−1 Mpc−1. These constraints are found to be inconsistent with the ones derived from the H(z) and SNe Ia data. We carry out the statefinder analysis, and find that the power‐law cosmological models approach the standard Λ cold dark matter (ΛCDM) model as q→−1. Finally, we conclude that despite having several good features power‐law cosmology is not a complete package for the cosmological purposes.

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“…We also study the evolution of the hubble parameter H(z) in the redshift range 0 < z < 1.8 with original data observational points extracted from [8] based on observations of red-enveloped galaxies [39] and BAO peaks [13]. It was also supplemented with the observational Hubble parameter data (OHD) and BAO in Lyα [7,44] implying that…”

Section: Hubble Parametermentioning

confidence: 99%

“…For the resulting jerks, we compare with SNLS SNIa [2], x-ray galaxy clusters [33] and the gold sample (SNIa) [34]. In addition, in order to study the evolution of the Hubble parameter, we compare with the observational data extracted from [8] based on observations of red-enveloped galaxies [39] and BAO peaks [13] supplemented with the observational Hubble parameter data (OHD) with BAO in Lyα [7,44]. Finally, in the conclusion section, we present the final considerations.…”

Section: Introductionmentioning

confidence: 99%

Constraints on cosmokinetics of smooth deformations

Capistrano

2015

Monthly Notices of the Royal Astronomical Society

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We study the possibility that the universe is subjected to a deformation, besides its expansion described by Friedmann's equations. The concept of smooth deformation of a riemannian manifolds associated with the extrinsic curvature is applied the standard FLRW cosmology. Starting from the resulting modified Friedman's equation we study two possible solutions with six models for each one in low redshift. In other to constrain the models, we calculate deceleration, jerk and Hubble parameters and compare with different data as the latest BAO/CMB + SNIa constraints, SNLS SNIa, x-ray galaxy clusters and the gold sample (SNIa). As a result, we obtain a set of proper models compatible with the current observational data.

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Observational constraints on interacting dark matter model without dark energy

Cited by 31 publications

References 89 publications

Testing the phenomenological interacting dark energy with observational H(z) data

Testing the phenomenological interacting dark energy with observational H(z) data

Observational constraints on Hubble constant and deceleration parameter in power-law cosmology

Constraints on cosmokinetics of smooth deformations

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