Dark energy, the theoretical engine of the expansion of the universe, which previously considered itself associated with a cosmic constant, is actually developing over time, a behavior that can lead to a review of our understanding of the universe.
Alexei Lotto Harnett, a spokesman for the international cooperation framework, said, who brings together 70 entities, said 70 entities, which brought 70 entities, said 70 entities, which brings 70 entities, who had 70 entities, who said 70 entities 0, said 70 entities, which brings 70 entities, which brings 70 parts, said 70 entities. Among these is the French atomic energy committee, for the American laboratory Berkeley, in a declaration released on Wednesday: “What we see is very interesting and we could be on the threshold of a great discovery” on the basic nature of the universe in which we live.
The HEGP Dark Spectrum analysis tool was installed on a telescope for this purpose, in the upper part of the American Observatory Kate Beck in Arizona; To help provide an understanding of this strength, it is one of the great puzzles of physics.
The robotic optical finishes of this tool are once monitored five thousand galaxies or parallelisms; A black hole are very bright bodies in their center. This is used to calculate its ages and sizes, then draw a three -dimensional map of the universe and discover the models that allow its history to follow.
It has been known for a century that the universe has been about expansion since its beginning, while the galaxies continue to stay away from each other. During the 90s, it was discovered that this expansion accelerated considerably about six billion years ago (the age of the universe is 13.8 billion years).
To explain this phenomenon, whose discovery is crowned by the Nobel Prize, physicists have taken on the energy of exile, which is the dark energy, which is partially replaced by normal matter and virtual dark matter.
The prevailing theory and its development provide that the visible universe consists of 70 percent of dark energy, 25 percent of black material and only 5 percent of normal matter.
“A fundamental moment”
In this “standard cosmic model” called “Lambda-Cdm”, Lambda-Cdm, refers to the dark energy constant, is the idea that Einstein has adopted, for the first time in his theory of general relativity.
Although this standard model is satisfactory, but “tensions have started to appear” with monitoring, according to Arno De Mattia, a physicist of the French atomic energy committee that participated in the analysis of the data of the spectral analysis tool for dark energy, for “the French news agency”.
In addition to other early light measurements in the universe and great mutuals, it increases and how to distort the gravity, the light of the galaxies, which dark energy is not fixed.
In a declaration issued with the presentation during the American Physical Association in Naim, California, California Deadinis for three years of monitoring for 15 million galaxy and false stars, he stressed that the impact of dark energy “could weaken over time”.
“When we collect all cosmic data, it indicates a slightly larger acceleration in the expansion of the universe for almost seven billion years in the past,” added De Matia. “This acceleration has turned into decline” in the last 2.5 billion years.
But at the moment there is no “absolute certainty”, according to the researcher.
This purpose requires new data from the Desi telescope and other tools, such as the European Euclide Telescope, the Roman Space Telescope of Nancy Grace and the Observatory of Vera Rubin in Chile. Etienne Berin, who is also physical in the atomic energy authority, hoped to “obtain a clearer picture, within five years”.
As for Joshua Freeman, the co -founder of the “Dark Energy Survir” program and the former collaborator with “Desi”, he said to the French press agency: “This new generation of desires will be decided by the matter, to transform these tests into a discovery, or to show us that we were on the wrong road and that the dark energy is already fixed”, describing it as a fundamental moment “.
Bertin added that confirming the presence of “dynamic” energy dark will be “a revolution at the level of what happened with the discovery of accelerated expansion”.
In this case, “the standard cosmic model will have to be different,” he said.
It will therefore be necessary to know if existing alternative theories are able to better reproduce notes or develop new others; Another step towards understanding the universe.
