A possible role for the merger of clusters/voids in the cosmological expansion

Abstract

In this study, we use the merger process of clusters/voids in the role of variable dark energy fluid to alleviate the Hubble tension, which can lead to a balance in the cosmological expansion rate. To reach this target, we will introduce a modified form of energy density for cosmic fluid with the quadratic equation of state, and then we obtain Hubble, deceleration parameters, and luminosity distance for this fluid. To obtain the merger factor and other parameters of our model, we utilize the NONLINEARMODELFIT function within MATHEMATICA. By consideration of the local and global measurements of ${\mathrm{H}}_0$, and the equation of state parameter $w$ as the priory values and fitting our model with Observational Hubble Data (OHD) measurements, we will show that the merger of clusters/voids plays the role of balancing the cosmic expansion rate. Also, it will be shown that the model is more compatible than $w$CDM with the standard model to describe the accelerating universe.

7 pages, 4 figures, 3 tables, According to the version accepted in MNRAS

References in corpus (23)

• Dynamics of dark energy
• Cosmology and the Fate of Dilatation Symmetry
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• In the Realm of the Hubble tension $-$ a Review of Solutions
• Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z$\sim$2
• Baryon Acoustic Oscillations in the Lyα forest of BOSS DR11 quasars
• Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars
• Are f(R) dark energy models cosmologically viable ?
• Calibration of the Tip of the Red Giant Branch (TRGB)
• Theoretical Models of Dark Energy
• Observational evidence for cosmological coupling of black holes and its implications for an astrophysical source of dark energy
• The Dipole Repeller
• Cosmo-dynamics and dark energy with a quadratic EoS: anisotropic models, large-scale perturbations and cosmological singularities
• Testing cosmic geometry without dynamic distortions using voids
• Voids and the Cosmic Web: cosmic depressions & spatial complexity
• Does information entropy play a role in the expansion and acceleration of the Universe?
• The Hubble Tension and Early Dark Energy
• Constraining Dark Energy from Local Group dynamics
• Dark Energy Survey Year 3 results: imprints of cosmic voids and superclusters in the Planck CMB lensing map
• Configuration entropy of the Cosmic Web: Can voids mimic the dark energy?
• Identification of Cosmic Voids as Massive Cluster Counterparts
• Foam-like structure of the Universe
• $H_0$ as a Universal FLRW Diagnostic

Cited by in corpus (3)

• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Observational Constraints on the Dark Energy with a Quadratic Equation of State
• Accelerating Universe in Terms of Hankel Function Index