Massive galaxy cluster could upend theory of universe evolut

In summary, the researchers found a massive galaxy cluster that appears to contradict the current theory of universe evolution. It is unknown how old the cluster is and whether it is unique, but it does not pose a significant threat to the current model.
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  • #2
It's an admittedly [by the researchers themselves] unsubstantiated finding.
 
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  • #4


According to the video, the cluster is 3.3 billion years old as we see it today

And super clusters are up to 1000 trillion solar masses

I don't understand what is so uniquely out of the ordinary
 
  • #5
TEFLing said:
According to the video, the cluster is 3.3 billion years old as we see it today

And super clusters are up to 1000 trillion solar masses

I don't understand what is so uniquely out of the ordinary
The problem of explaining a 4 x 10^14 Solar Mass cluster forming only 800 million years after BB.

An age problem?

Garth
 
  • #6
The article states 0.8 Gyr

The video states 3.3 Gyr

Which is it?

Perhaps the cluster formed about 2.5 Gyr after the big bang...

And evolved for another 0.8 Gyr...

Into the way we see it on the sky today?
 
  • #7
Garth said:
The problem of explaining a 4 x 10^14 Solar Mass cluster forming only 800 million years after BB.

An age problem?

Garth
My bad - an age problem? No.
From the arXiv paper Chandra deep observation of XDCP J0044.0-2033, a massive galaxy cluster at z>1.5
Given its mass and the XDCP survey volume, XDCP J0044.0-2033 does not create significant tension with the WMAP-7 CDM cosmology.

The super-cluster is seen as it was 9.6Gyr ago. It was then 0.8Gyr old, so it formed 3.3Gyr after BB, 9.6+0.8+3.3=13.7, the age of the universe.

Note there was a high density of Intercluster medium (ICM) which had a total mass of (1.48±0.20)×1013M⊙ i.e. roughly 10% of the mass of the clusters in that central region with an iron abundance of ZFe = 0.41(+0.29−0.26) ZFe⊙ (nearly half Solar abundance)

As iron is the last element to be synthesised by nuclear fusion in stellar cores there may be a question of whether there had been enough time for this to be produced and then scattered into the inter-cluster medium.Garth
 
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1. What is a massive galaxy cluster?

A massive galaxy cluster is a large group of galaxies held together by gravity. It is one of the largest structures in the universe and can contain hundreds or even thousands of galaxies.

2. How could a massive galaxy cluster upend the theory of universe evolution?

The theory of universe evolution suggests that smaller structures, such as galaxies, formed first and then merged to form larger structures, like galaxy clusters. However, the discovery of a massive galaxy cluster challenges this theory as it suggests that these large structures may have formed much earlier than previously thought.

3. How was this massive galaxy cluster discovered?

The massive galaxy cluster was discovered using the European Space Agency's Gaia satellite, which measures the positions, distances, and motions of stars in the Milky Way. By studying the movements of stars in the cluster, researchers were able to identify the presence of a massive galaxy cluster.

4. What implications could this discovery have for our understanding of the universe?

If confirmed, this discovery could significantly change our understanding of how the universe evolved. It could suggest that galaxy clusters, the largest structures in the universe, formed much earlier than previously thought and may have played a crucial role in shaping the universe we see today.

5. What further research is needed to confirm this discovery?

Further observations and analyses are needed to confirm the existence of this massive galaxy cluster and its potential impact on our understanding of the universe. This could include studying the cluster in more detail using other telescopes and conducting simulations to understand how such a large structure could have formed at such an early stage in the universe's history.

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