The Chandra telescope detected an uneven expansion of the universe

The Chandra telescope has detected an uneven expansion of the universe. If this hypothesis is confirmed by data from other telescopes, scientists will have to recalculate the distances from the solar system to all distant objects, the work of astrophysicists at Harvard University. The study has been published in Astronomy and Astrophysics.

According to the theory of the Big Bang, the universe is constantly expanding due to dark energy - a fifth force (after the gravitational, electromagnetic, strong and weak nuclear forces), which acts on matter and makes it expand regardless of the force of gravity.

In accordance with the cosmological principles of Copernicus, dark energy forces the universe to expand uniformly - that is, at each point this process occurs at the same speed.

At the beginning of the XXI century, scientists found the first evidence of the uneven expansion of the universe: studying the relict radiation, they found an area called the "Big Bang echo", in which there was more dark energy than in other parts of the universe.

In a new study, astronomers using Chandra, XMM-Newton and ROSAT telescopes studied the production of X-rays from more than 300 randomly selected bright clusters of galaxies. If these clusters were about the same distance from Earth and had similar temperatures and dark energies, their radiation in the X-ray range would be about the same.

The study showed that this was not the case: the brightness of clusters that were identical in temperature and distance from the Earth in some cases differed by more than a third. Given that measurements were made with three telescopes, the probability of error in the study was extremely low. This means that the universe is expanding unevenly.

Previously, a group of physicists at Imperial College in London had conducted a laboratory experiment to narrow down the boundaries for finding dark energy.

Post a Comment