A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution

Abstract

This paper explores the fundamental cosmological principle, with a specific focus on the homogeneity and isotropy assumptions inherent in the Friedmann model that underpins the standard model. We propose a modified redshift model that is based on the spatial distribution of luminous matter, examining three key astronomical quantities: light intensity, number density, and the redshift of galaxies. Our analysis suggests that the model can account for cosmic accelerated expansion without the need for dark energy in the equations. Both simulations and analytical solutions reveal a unique pattern in the formation and evolution of cosmic structures, particularly in galaxy formation. This pattern shows a significant burst of activity between redshifts 0 < z < 0.4, which then progresses rapidly until approximately z ≈ 0.9, indicating that the majority of cosmic structures were formed during this period. Subsequently, the process slows down considerably, reaching a nearly constant rate until around z ≈ 1.6, after which a gradual decline begins. We also observe a distinctive redshift transition around z ≈ 0.9 before the onset of dark-matter-induced accelerated expansion. This transition is directly related to the matter density and is dependent on the geometry of the universe. The model’s ability to explain cosmic acceleration without requiring fine tuning of the cosmological constant highlights its novelty, providing a fresh perspective on the dynamic evolution of the universe. Keywords: modified redshift; light intensity; number density; accelerated expansion; galaxies; structure formation; Friedmann

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APA

Nyakundi, N (2024). A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution. Afribary. Retrieved from https://track.afribary.com/works/a-critical-examination-of-the-standard-cosmological-model-toward-a-modified-framework-for-explaining-cosmic-structure-formation-and-evolution

MLA 8th

Nyakundi, Nyagisera "A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution" Afribary. Afribary, 04 Jun. 2024, https://track.afribary.com/works/a-critical-examination-of-the-standard-cosmological-model-toward-a-modified-framework-for-explaining-cosmic-structure-formation-and-evolution. Accessed 18 Dec. 2024.

MLA7

Nyakundi, Nyagisera . "A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution". Afribary, Afribary, 04 Jun. 2024. Web. 18 Dec. 2024. < https://track.afribary.com/works/a-critical-examination-of-the-standard-cosmological-model-toward-a-modified-framework-for-explaining-cosmic-structure-formation-and-evolution >.

Chicago

Nyakundi, Nyagisera . "A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution" Afribary (2024). Accessed December 18, 2024. https://track.afribary.com/works/a-critical-examination-of-the-standard-cosmological-model-toward-a-modified-framework-for-explaining-cosmic-structure-formation-and-evolution

A Critical Examination of the Standard Cosmological Model: Toward a Modified Framework for Explaining Cosmic Structure Formation and Evolution

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