"Time travel" 13 billion years, black hole reveals the inexplicable

Người Lao ĐộngNgười Lao Động02/07/2024

(NLDO) - New research aimed at understanding the nature of J1120+0641, a black hole from the Dawn of the Universe, has yielded completely shocking results.


A study recently published in the scientific journal Nature Astronomy attempted to "weigh" the weight of the monster black hole J1120+0641 and determined that it is 1 billion times heavier than our Sun.

It was a result that completely baffled scientists.

J1120+0641 "eats" so fiercely that it shines like a star - Graphic image: ESO

J1120+0641 is a "time-traveling" black hole from the era called "Cosmic Dawn", the first 1 billion years after the Big Bang that created the universe.

J1120+0641 has appeared as a bright quasar in Earth's observational tools since 2011.

In the new study, scientists used the James Webb super telescope (which will start operating in 2022) to observe this mysterious object more clearly.

Saying J1120+0641 "travels through space" is because the light that creates an image of an object needs a delay corresponding to the distance to reach the telescope.

In other words, when we see something billions of light years away, we are looking at the time and place where that light came from billions of years ago – looking straight into the past.

This means J1120+0641 reached such a massive size at that time – just 770 million years after the Big Bang, or more than 13 billion years ago.

According to previously widely accepted principles, the first black holes should be simple and small. Over billions of years, they can gradually grow larger through long periods of swallowing matter, even merging many times, thereby creating "super monster" black holes.

A representative of the "super monster" Sagittarius A*, the central black hole of the Milky Way galaxy where Earth resides, weighs nearly 4.3 million times the mass of the Sun.

So an object weighing as much as 1 billion Suns, appearing when the universe was only 770 million years old, becomes inexplicable.

It's possible that black holes in the early universe were more "voracious" than today's monster black holes. However, black holes can only "eat" at a certain rate, determined by the seemingly unbreakable "Eddington limit" in physics.

Beyond this limit, the heated material would glow so brightly that the radiation pressure would exceed gravity, pushing the material away and leaving nothing for the black hole to "eat".

However, black hole J1120+0641 has broken the Eddington limit.

It can enter super-Eddington accretion, where it pushes past this limit and eats up as much matter as possible before radiation pressure kicks in.

This is one possible explanation for the black hole at the center of J1120+0641, and it would force many laws of astrophysics to change if we continue to find similar things in the early universe.



Source: https://nld.com.vn/xuyen-khong-13-ti-nam-lo-den-de-lo-dieu-khong-the-giai-thich-196240702111724631.htm

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