Nyagisera, R.N.; Wamalwa, D.; Rapando, B.; Awino, C.; Mageto, M. A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution. Astronomy2024, 3, 43-67.
Nyagisera, R.N.; Wamalwa, D.; Rapando, B.; Awino, C.; Mageto, M. A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution. Astronomy 2024, 3, 43-67.
Nyagisera, R.N.; Wamalwa, D.; Rapando, B.; Awino, C.; Mageto, M. A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution. Astronomy2024, 3, 43-67.
Nyagisera, R.N.; Wamalwa, D.; Rapando, B.; Awino, C.; Mageto, M. A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution. Astronomy 2024, 3, 43-67.
Abstract
In this paper, we examine a modified Friedmann model designed to explain cosmic structures and late-time accelerated expansion of the universe, grounded in the spatial distribution of luminous matter. Through comprehensive simulations of our universe, we observe a notable surge in the formation rate of galaxies at redshift z≈1, characterized by a peak expansion rate in cosmic structures formed at z ≈0.9, reaching its zenith at z ≈2. Subsequently, a transition occurs before the onset of dark matter-induced accelerated expansion. The acceleration of the universe stands as an entrenched and virtually model-independent theoretical tenet, resilient to the ongoing debate surrounding the enigma of dark energy. A distinctive redshift transition zone marks the shift from cosmic deceleration to accelerated expansion. The transition is proportional to matter density and contingent upon the geometry of the universe. The influence of the cosmological constant on the evolution of cosmic structures in the CDM paradigm appears insufficient in curtailing the efficiency of late-time structure formation compared to the observed values in the modified model
Keywords
Modified redshift; Friedmann; Number density; Light intensity; Galaxies
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
