Testing the interaction model with cosmological data and gamma-ray bursts

Abstract

We use the new gamma-ray bursts (GRBs) data, combined with the baryon acoustic oscillation(BAO) observation from the spectroscopic Sloan Digital Sky Survey (SDSS) data release, the newly obtained $A$ parameter at $z=0.6$ from the WiggleZ Dark Energy Survey, the cosmic microwave background (CMB) observations from the 7-Year Wilkinson Microwave Anisotropy Probe (WMAP7) results, and the type Ia supernovae (SNeIa) from Union2 set, to constrain a phenomenological model describing possible interactions between dark energy and dark matter, which was proposed to alleviate the coincidence problem of the standard $\Lambda$CDM model. By using the Markov Chain Monte Carlo (MCMC) method, we obtain the marginalized $1\sigma$ constraints ${\Omega }_m=0.2886\pm 0.0135$, $r_m=-0.0047\pm 0.0046$, and $w_X=-1.0658\pm 0.0564$. We also consider other combinations of these data for comparison. These results show that: (1) the energy of dark matter is slightly transferring to that of dark energy; (2) even though the GRBs+BAO+CMB data present less stringent constraints than SNe+BAO+CMB data do, the GRBs can help eliminate the degeneracies among parameters.

3 figures, 9 pages, accepted for publication in PLB

References in corpus (16)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• Improved Dark Energy Constraints from ~100 New CfA Supernova Type Ia Light Curves
• Cosmological Evolution of a Quintom Model of Dark Energy
• The Hubble Diagram to Redshift >6 from 69 Gamma-Ray Bursts
• A Cosmology-Independent Calibration of Gamma-Ray Burst Luminosity Relations and the Hubble Diagram
• Interacting Vector-like Dark Energy, the First and Second Cosmological Coincidence Problems
• Improved Constraints on the Acceleration History of the Universe and the Properties of the Dark Energy
• Interacting Phantom Energy
• Attractor solutions for general hessence dark energy
• Measuring Dark Energy with Gamma-Ray Bursts and Other Cosmological Probes
• Cheng-Weyl Vector Field and its Cosmological Application
• The Hubble diagram extended to z>>1: the gamma-ray properties of GRBs confirm the Lambda-CDM model
• Dark energy and cosmic curvature: Monte-Carlo Markov Chain approach
• Hubble Diagram of Gamma-Rays Bursts calibrated with Gurzadyan-Xue Cosmology