Xinhua News Agency, Beijing (Reporter Dong Ruifeng) For the first time, mankind successfully explored the formation history of the cosmic structure by using distant quasars. The reporter learned from the National Astronomical Observatory of the Chinese Academy of Sciences that the eBOSS International Scientific Cooperation Group, the world's largest galaxy survey organization, recently released the latest research results: by observing the spatial distribution of quasars in the depths of the universe between 6.8 billion light-years and 65.438+005 billion light-years away from the Earth, a significant red shift distortion signal was found.

The phenomenon of redshift distortion is a special three-dimensional cluster model formed by the local gravitational potential of stars. Because this signal is directly related to gravity, it is one of the most important detectors to study gravity on the cosmic scale.

It is reported that the red-shift distortion signal observed this time is generated when the universe is only 1/3 to 1/2 today. This discovery is of great significance to the subsequent research on the frontier topics of cosmology such as dark energy and gravitational properties.

The eBOSS cooperation group published seven scientific papers, two of which were led by Zhao Gongbo, a researcher at the National Astronomical Observatory, and Wang Dandan, a doctoral student, with Wang Yuting, a doctor at the National Astronomical Observatory, as the core author.

In 200 1 year, for the first time, by observing the cluster of galaxies, human beings discovered the phenomenon of redshift and distortion of the adjacent universe. In 20 17, the eBOSS cooperative group discovered the obvious baryon acoustic oscillation signal for the first time by using quasars.

The eBOSS project was launched in 20 14, and it is the largest galaxy spectrum survey project in the world, with the participation of multinational research institutions including the National Astronomical Observatory of Chinese Academy of Sciences.