2024-03-19 03:40:47
Groundbreaking research from the University of Ottawa, led by physicist Rajendra Gupta, proposes a new cosmological model, the CCC+TL model, which argues that dark matter is not necessary to explain the behavior of the universe. Credit: twoday.co.il.com
The current theoretical model for the composition of the universe is that it is made of ‘ordinary matter’, ‘dark energy’ and ‘dark matter’. New research challenges this.
A University of Ottawa study published in The Astrophysical Journal challenges the current model of the universe by showing that it actually has no room for dark matter.
In cosmology, the term “dark matter” describes anything that does not seem to interact with light or the electromagnetic field, or can only be explained by gravity. We can’t see it, nor do we know what it’s made of, but it helps us understand how galaxies, planets, and stars behave.
Offer for a new model
Rajendra Gupta, professor of physics in the Faculty of Science, used a combination of the variable coupling constants (CCC) and “tired light” (TL) theories (the CCC+TL model) to reach this conclusion. This model combines two ideas – about how the forces of nature decrease over cosmic time and about light losing energy when it travels a long distance. This has been tested and shown to be consistent with several observations, such as how galaxies expand and how light from the early universe evolved.
This discovery challenges the prevailing understanding of the universe, which suggests that about 27% of it is made up of dark matter and less than 5% of normal matter, remaining in the dark energy.
“The findings confirm that the universe does not require dark matter to exist,” said Rajendra Gupta, professor of physics at the Faculty of Science, Ottawa. Credit: University of Ottawa
Challenging the need for dark matter in the universe
“The research findings confirm that our previous work (“Early observations of the JWST universe and ΛCDM cosmology”) on the age of the universe which is 26.7 billion years allowed us to discover that the universe does not require dark matter to exist,” explains Gupta. “In standard cosmology, the accelerated expansion of the universe is said to be caused by dark energy, but it is actually due to the forces of nature weakening as it expands, not due to dark energy.”
“Redshifts” refer to when light is shifted towards the red part of the spectrum. The researcher analyzed data from recent papers on the distribution of galaxies at low redshifts and the angular size of the sound horizon in the high redshift literature.
“There are several papers that question the existence of dark matter, but mine is the first, as far as I know, to rule out its cosmological existence while being consistent with key cosmological observations that we have been able to confirm,” says Gupta.
By challenging the need for dark matter in the universe and providing evidence for a new cosmological model, this study opens new avenues for studying the fundamental properties of the universe.
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