The hypothesis of dark energy is there to stand?

A modern astrophysical problem, though more or less " confusing " for " pagan " people, is full of excitement and attraction. We would like to introduce the following translation .

The question is: Is the idea of ​​dark energy given more than a decade ago to explain the accelerated expansion of the affordable universe?

The conclusion of a controversial new doctrine indicates that the accelerated expansion of the universe may be just an illusion and the existence of dark energy seems to waver.

In a new study, two mathematicians, Blake Temple and Joel Smoller, presented their solutions to the equations in Einstein's theory of general relativity - the theory that describes the relationship between gravity. and material.

One of the farthest points of the universe is observed by the Hubble telescope.(Photo: NASA)

The study suggests that our galaxy lies inside a large space where the material density is unusually low due to the big-bang wave of waves sweeping the universe.

From our point of view, other galaxies outside the space seem to have moved farther than expected while they are still in their original position.

Blake Temple, a member of the University of California research team, said that if the answers were correct, they could explain the unusual expansion of galaxies without the need for dark energy.

Other scientists argue that trying to remove dark energy from the cosmic model is 'commendable'. But they note that the new doctrine may be contrary to the foundation of modern cosmology and it is difficult for astronomers to accept.

An alternative to dark energy

Previously, astronomers still thought that gravity slowed the expansion of the universe due to the big-bang explosion. Until 1998, two independent groups declared data showing that the expansion of the universe is happening faster.

Model of the impact of black energy on the acceleration of the universe's acceleration.(Photo: Internet)

Both groups found that light from distant supernovae appeared fainter than expected - which prompted them to wonder if the universe was only governed by gravity, why supernova explosions It is too far from anticipation.

To explain their observations, astronomers began to consider the idea of ​​dark energy, an antigravity force of the universe that had the effect of propelling matter. However, over ten years later, no one is sure what dark energy is or does it really exist?

In search of an alternative to dark energy, another group of scientists proposed a new theory that our galaxy lies in a spreading wave, a rippling space ripple in density. low

Wavy effect

Albert Einstein

Temple and his colleagues, Joel Smoller of the University of Michigan, were the first to introduce a possible mechanism to create a wavy effect.

Their solution, described recently in the Proceedings of the National Academy of Sciences minutes, shows that big-bang explosions can create a massive space wave. Big is called density wave (a density wave).

When this initial wave sweeps across the universe, it leaves behind a low-density ripple extending to several tens of millions of light years, and this ripple is covering the galaxy.

Meanwhile, the material blocking in front of the wave was pushed away, leaving its original position like pebbles being washed up on the beach by waves. Subsequent materials then formed distant stars and galaxies.

When light from objects finally reaches Earth, they appear dimmer than expected because those objects are farther away from Earth before they are swept away by the density wave. This would explain why supernovae were described in 1998 further without the need for space acceleration.

Opposition doctrines

However, this new doctrine may violate cosmic theory as Copernic principle.

The Copernican principle states that the universe is homogeneous - when viewed on a very wide range, different parts of the universe basically look the same.

The Copernican principle is also a hypothesis associated with a currently supported analysis of Einstein's equilibrium theory, known as the cosmic theory of Friedman, Robertson and Walker (in the 20s, Friedman hypothesized that the Universe The pillar is unique with every point in the space being homogeneous and isotropic, meaning that there is no special place in the universe, this hypothesis was proved by two scientists, Robertson and Walker in the mid-30s.

Dragan Huterer, an astrophysicist at the University of Michigan, said: ' We want uniformity in balance, because uniformity is what we see in the sky .' In contrast, Smoller and Temple's answers do not use Copernic principles because matter within the ripples of density will be significantly less than external matter.

The authors of the study note that if the big-bang wave of waves creates a lot of ripples, that's how their theory does not violate the Corpecnic principle. In this case, the universe will retain its homogeneous form when viewed from a far enough advantage point.

Bitter pills are hard to swallow

Dragan Huterer argues that for astronomers to take the doctrine seriously, the author must explain the cause of many evidence supporting the existence of dark energy.

The existence of dark energy is still a mystery.(Photo: NASA)

Huterer added, not sure that the new theory fits the data. All the statements they make need to add the word ' perhaps '. The ' perhaps ' theory explains the acceleration of the universe.

But even if the theory of density waves against test tests, dismissing the idea of ​​a homogeneous universe, it would be a bitter pill to swallow for astronomers.

Huterer adds, in many ways, the new research raises many interesting questions as well as minimal understanding of the concept of dark energy. We need to wonder why we are in the middle of a wave of density rather than another galaxy.