Professor Rajendra Gupta of the University of Ottawa is challenging current theoretical models of the composition of the universe by showing that there is actually no room for dark matter in the universe.
This artist's impression shows the evolution of the universe, starting with the Big Bang on the left and continuing with the emergence of the Cosmic Microwave Background. The formation of the first stars ends the Dark Ages of the universe, followed by the formation of galaxies. Image credit: M. Weiss / Harvard-Smithsonian Center for Astrophysics.
In cosmology, the term dark matter refers to anything that does not appear to interact with light or electromagnetic fields, or that can only be explained by gravity.
Although we can't see it and don't know what it's made of, it helps us understand how galaxies, planets, and stars work.
Professor Gupta reached this conclusion using a combination of covariation coupling constant (CCC) and “tired light” (TL) theory (CCC+TL model).
His model combines two ideas: how the forces of nature diminish over cosmic time and that light loses energy as it travels long distances.
It has been tested and shown to be consistent with several observations, including how galaxies spread and how light from the early universe evolved.
The discovery challenges the common understanding of the universe, which suggests that about 27% of the universe is made up of dark matter, less than 5% is normal matter, and the rest is dark energy.
“This new discovery confirms previous research, which found that the universe is 26.7 billion years old, and found that the existence of dark matter is not necessary for the universe,” said Gupta. the professor said.
“Standard cosmology says that the accelerating expansion of the universe is caused by dark energy, but it's actually because the forces of nature weaken as the universe expands, not by dark energy.”
In his research, Professor Gupta analyzed data from a recent paper on the distribution of galaxies at low redshifts and the angular size of the sound horizon in the literature at high redshifts.
“There are several papers that question the existence of dark matter, but to my knowledge, my paper does not support the existence of dark matter, while being consistent with the major cosmological observations that we have had time to confirm.” “This is the first paper to exclude ,” he said.
“By challenging the need for dark matter in the universe and providing evidence for a new cosmological model, this study opens up new avenues for exploring the fundamental properties of the universe.”
of paper Published in astrophysical journal.
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Rajendra P.Gupta other. 2024. Testing the CCC+TL cosmology with observed baryon acoustic vibration signatures. APJ 964, 55; doi: 10.3847/1538-4357/ad1bc6
Source: www.sci.news
