- #1

pinball1970

Gold Member

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- TL;DR Summary
- "Our newly-devised model stretches the galaxy formation time by a several billion years, making the universe 26.7 billion years old, and not 13.7 as previously estimated," says author Rajendra Gupta, adjunct professor of physics in the Faculty of Science at the University of Ottawa.

The article https://phys.org/news/2023-07-age-u...d be twice,"impossible early galaxy problem."

The paper

https://academic.oup.com/mnras/adva...2/7221343?redirectedFrom=fulltext&login=false

From the abstract.

"We present a model with covarying coupling constants (CCC), starting from the modified FLRW metric and resulting Einstein and Friedmann equations, and a CCC + TL hybrid model. They fit the Pantheon + data admirably, and the CCC + TL model is compliant with the JWST observations. It stretches the age of the universe to 26.7 Gyr with 5.8 Gyr at z=10�=10 and 3.5 Gyr at z=20�=20, giving enough time to form massive galaxies. It thus resolves the ‘impossible early galaxy’ problem without requiring the existence of primordial black hole seeds or modified power spectrum, rapid formation of massive population III stars, and super Eddington accretion rates. One could infer the CCC model as an extension of the ΛΛCDM model with a dynamic cosmological constant."

The article mentions Zwicky's tired light theory which I thought was debunked.

These sound like large claims to say the least, it would be appreciated to get a view from the pf cosmology guys.

The paper

https://academic.oup.com/mnras/adva...2/7221343?redirectedFrom=fulltext&login=false

From the abstract.

"We present a model with covarying coupling constants (CCC), starting from the modified FLRW metric and resulting Einstein and Friedmann equations, and a CCC + TL hybrid model. They fit the Pantheon + data admirably, and the CCC + TL model is compliant with the JWST observations. It stretches the age of the universe to 26.7 Gyr with 5.8 Gyr at z=10�=10 and 3.5 Gyr at z=20�=20, giving enough time to form massive galaxies. It thus resolves the ‘impossible early galaxy’ problem without requiring the existence of primordial black hole seeds or modified power spectrum, rapid formation of massive population III stars, and super Eddington accretion rates. One could infer the CCC model as an extension of the ΛΛCDM model with a dynamic cosmological constant."

The article mentions Zwicky's tired light theory which I thought was debunked.

These sound like large claims to say the least, it would be appreciated to get a view from the pf cosmology guys.