Scientists at the National Astronomical Observatory of the Chinese Academy of Sciences have proved the existence of dark energy, which is the cause of the accelerated expansion of the universe. Article researchers published in the journal Monthly Notices of the Royal Astronomical Society.
The data for the analysis were obtained during the extended Baryon Oscillation Spectroscopic Survey (eBOSS), that is, oscillations in the density of visible matter, which arose in the young dense Universe due to acoustic waves. This allowed us to measure the rate of cosmological expansion and growth of large-scale structures in the Universe when the size of its radius was limited to the range of 0.7-1.8 billion light years.
According to the results, the ratio between the energy density due to the cosmological constant (or dark energy) and the critical density capable of stopping the expansion of the Universe (this ratio is denoted ΩΛ) was greater than zero at the 11 sigma level of statistical significance. This is by far the strongest evidence for dark energy in the Universe.