Some parts of the universe live according to its own laws of physics?


11/09/2011

There is growing evidence that some parts of the universe can be special.

One of the cornerstones of modern astrophysics is the cosmological principle. According to him, observers on Earth see the same thing that observers from any other point of the universe, and that the laws of physics are the same everywhere.

Set of observations support this idea. For example, the universe looks more or less the same in all directions, with a similar distribution of galaxies on all sides.

But in recent years, some cosmologists began to doubt the correctness of this principle. They point to the data obtained in the study of supernovae of type 1, which are moving away from us with ever-increasing rate, which indicates not only that the universe is expanding, but also to the increasing acceleration of the expansion. It is curious that the acceleration is not uniform in all directions. In some areas of the universe is accelerating faster than in others.

But how much to trust this data? It is possible that in some areas we are seeing a statistical error, which will disappear when the correct analysis of the data obtained.

Kai Rong-Jen and Zhong-Liang Tuo from the Institute of Theoretical Physics, Chinese Academy of Sciences in Beijing, once again checked the data for up to 557 supernovae from all parts of the universe and conducted repeated calculations.

Today, they confirmed the presence of heterogeneity. According to their calculations, the fastest acceleration occurs in the northern hemisphere constellation Vulpecula. These data are consistent with other studies that there is heterogeneity in the cosmic microwave background radiation.

This may force cosmologists to come to the bold conclusion that the cosmological principle is wrong.

There is a troubling question: why the universe is not uniform, and how it will affect the existing models of the cosmos?

Original: Technologyreview


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