Constellation, le dépôt institutionnel de l'Université du Québec à Chicoutimi

An alternative to the dark matter? Part 2: A close universe (10−9 s to 3 Gy), galaxies and structures formation

Perron Jean. (2021). An alternative to the dark matter? Part 2: A close universe (10−9 s to 3 Gy), galaxies and structures formation. Journal of High Energy Physics, Gravitation and Cosmology, 7, (3), p. 808-843.

[thumbnail of An Alternative to the Dark Matter Part 2.pdf]
PDF - Version publiée
Disponible sous licence Creative Commons (CC-BY 2.5).


URL officielle:


A cosmological model was developed using the equation of state of photon gas, as well as cosmic time. The primary objective of this model is to see if determining the observed rotation speed of galactic matter is possible, without using dark matter (halo) as a parameter. To do so, a numerical application of the evolution of variables in accordance with cosmic time and a new state equation was developed to determine precise, realistic values for a number of cosmological parameters, such as the energy of the universe U, cosmological constant Λ, the curvature of space k, energy density ρΛe (part 1). The age of the universe in cosmic time that is in line with positive energy conservation (in terms of conventional thermodynamics) and the creation of proton, neutron, electron, and neutrino masses, is ~76 [Gy] (observed ~ 70 [km · s-1 · Mpc-1]). In this model, what is usually referred to as dark energy actually corresponds to the energy of the universe that has not been converted to mass, and which acts on the mass created by the energy-mass equivalence principle and the cosmological gravity field, FΛ, associated with the cosmological constant, which is high during the primordial formation of the galaxies (<1 [Gy]). A look at the Casimir effect makes it possible to estimate a minimum Casimir pressure Pc0 and thus determine our possible relative position in the universe at cosmic time 0.1813 (t0/tΩ = 13.8[Gy]/76.1[Gy]). Therefore, from the observed age of 13.8 [Gy], we can derive a possible cosmic age of ~76.1 [Gy]. That energy of the universe, when taken into consideration during the formation of the first galaxies (<1 [Gy]), provides a relatively adequate explanation of the non-Keplerian rotation of galactic masses.

Type de document:Article publié dans une revue avec comité d'évaluation
Pages:p. 808-843
Version évaluée par les pairs:Oui
Sujets:Sciences naturelles et génie > Sciences naturelles
Sciences naturelles et génie > Sciences naturelles > Astronomie et astrophysique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:Cosmological parameters numerical values, cosmology early universe, galaxies kinematic and dynamic, paramètres cosmologiques valeurs numériques, cosmologie univers primordial, galaxies cinématiques et dynamiques
Déposé le:23 juill. 2021 14:47
Dernière modification:23 juill. 2021 14:47
Afficher les statistiques de telechargements

Éditer le document (administrateurs uniquement)

Creative Commons LicenseSauf indication contraire, les documents archivés dans Constellation sont rendus disponibles selon les termes de la licence Creative Commons "Paternité, pas d'utilisation commerciale, pas de modification" 2.5 Canada.

Bibliothèque Paul-Émile-Boulet, UQAC
555, boulevard de l'Université
Chicoutimi (Québec)  CANADA G7H 2B1
418 545-5011, poste 5630