Viscous Self Interacting Dark Matter Cosmology For Small Redshift

Abstract

The viscosity of dark matter in cosmological models may cause an accelerated expansion and when this effect is sufficiently large, it can explain the dark energy. In this work, attributing the origin of viscosity to self-interaction of dark matter, we study the viscous cosmology at small redshift $(0\le z\le 2.5)$. Assuming the cluster scale to be virialized and by modeling a power law behavior of velocity gradients, we calculate the Hubble expansion rate, $H(z)$ and the deceleration parameter, $q(z)$. We then perform a ${\chi }^2$ analysis to estimate the best fit model parameters. By using the best fit values, we explain the cosmic chronometer and type Ia supernova data. We conclude that if the dissipative effects become prominent only at the late time of cosmic evolution and are smaller at higher redshift, we can explain the observational data without requiring any dark energy component. Our analysis is independent of any specific model of self interacting dark matter.

arXiv comment18 pages, 5 figures, 1 table. Comments are welcome

References in corpus (39)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Planck 2013 results. XVI. Cosmological parameters
• Dynamics of dark energy
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• Observational evidence for self-interacting cold dark matter
• The Hubble Space Telescope Cluster Supernova Survey: V. Improving the Dark Energy Constraints Above z>1 and Building an Early-Type-Hosted Supernova Sample
• Cosmological Constraints from the SDSS Luminous Red Galaxies
• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• Dark Matter Self-interactions and Small Scale Structure
• Dark Matter Halos as Particle Colliders: A Unified Solution to Small-Scale Structure Puzzles from Dwarfs to Clusters
• Hubble parameter measurement constraints on the redshift of the deceleration-acceleration transition, dynamical dark energy, and space curvature
• Mass Models for Low Surface Brightness Galaxies with High Resolution Optical Velocity Fields
• Bulk Viscous Cosmology
• The Density Profiles of Massive, Relaxed Galaxy Clusters. II. Separating Luminous and Dark Matter in Cluster Cores
• The Density Profiles of Massive, Relaxed Galaxy Clusters. I. The Total Density Over Three Decades in Radius
• Viscous Cosmology for Early- and Late-Time Universe
• Determination of the Local Dark Matter Density in our Galaxy
• Theoretical Models of Dark Energy
• Does Bulk Viscosity Create a Viable Unified Dark Matter Model?
• Bulk viscosity driving the acceleration of the Universe
• Dark goo: Bulk viscosity as an alternative to dark energy
• Can a matter-dominated model with constant bulk viscosity drive the accelerated expansion of the universe?
• Constraints on dissipative unified dark matter
• Dissipative properties of hot and dense hadronic matter in excluded volume hadron resonance gas model
• Bulk viscous cosmology with causal transport theory
• Cosmic viscosity as a remedy for tension between PLANCK and LSS data
• Accelerating cosmological expansion from shear and bulk viscosity
• Late Decaying Dark Matter, Bulk Viscosity and the Cosmic Acceleration
• Constraints on cosmological viscosity and self interacting dark matter from gravitational wave observations
• Viscous dark matter and 21 cm cosmology
• Gravitational wave as probe of superfluid dark matter
• Analysing dissipative effects in the $\Lambda$CDM model
• Viscous Self Interacting Dark Matter and Cosmic Acceleration
• Bounds on Neutrino Mass in Viscous Cosmology
• Damping of gravitational waves in a viscous Universe and its implication for dark matter self-interactions
• Can neutrino viscosity drive the late time cosmic acceleration?
• Viscous Cosmology

Cited by in corpus (9)

• R-modes as a New Probe of Dark Matter in Neutron Stars
• Viscous dark matter and 21 cm cosmology
• Modeling of accelerating Universe with bulk viscous fluid in Bianchi V space-time
• Viscosity in cosmic fluids
• Can the Hubble tension be resolved by bulk viscosity?
• Viscous Cosmologies
• Gravitational Wave luminosity distance in viscous cosmological models
• Lightening the Dark Matter from its Viscosity and Explanation of EDGES Anomaly
• The effect of redshift degeneracy and the damping effect of viscous medium on the information extracted from gravitational wave signals