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Hudimir t1_jao97us wrote

Reply to comment by summitrow in Why do cosmologists say that gravity should "slow down" the expansion of the universe? by crazunggoy47

Correct me if i misunderstood. So in that article where they say black holes might be the source of dark energy they say so, because they measured/observed more dark energy impact around those black holes? Also fyi i am currently studying undergrad physics so the very basics(e.g. black holes are black because light cannot escape them) I think, I understand, so you can complicate more if you have the knowledge.

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VegaGraviton t1_jaok1al wrote

I had a brief reread of the articles discussing the theory. Bear in mind that my personal background is in Cosmic Inflation and so I'm not intimately familiar with this theory. From what I gleamed Einsteins Equations can predict an object that is essentially a concentrated bundle of Vacuum Energy, which is a commonly theorised candidate for Dark Energy. This object would look and act like a Black Hole to outside observers. Therefore, any Black Hole that we observe could in fact be a source of Dark Energy, and we wouldn't be able to tell with our current understanding of the model.

Essentially its a mathematical model that has been proposed, rather than any new observations.

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summitrow t1_japc8y4 wrote

Yes light cannot escape them, which is because of the incredibly strong gravity well of a black hole.

The very recent articles on black holes and dark energy are very speculative.

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