Here is a detailed map of the dark matter of the entire universe

Dark energy and dark matter make up about 95% of the matter in the observable universe. Dark matter is responsible for the creation of stars, galaxies and clusters of galaxies. Dark energy is a mysterious force that drives the expansion of the universe. Astronomers can now have a detailed map of their location.

Using Einstein's theory of general relativity, an international team of researchers has attempted to measure the "size" of dark matter in the universe, notes a statement released by the Kavli Institute of the University. from Tokyo. ). By analyzing 10 million distant galaxies, the team tried to better understand the dark energy.

The study wanted to examine why dark particles make up the majority of matter in the universe. The reason for this so important number – 95% of the universe – is a mystery to this day. To explain the behavior of dark energy and to examine the fate of the entire universe, researchers must first discover exactly what dark matter and dark energy are because science has no idea what this is. that she is and has never been really seen or observed before.

Studies to measure the amount of dark matter have been tried in the past. Looking at billions of light-years, astronomers focus primarily on the past. In a much younger world, the Planck satellite of the European Space Agency, for example, is one of them. Black energy should, depending on how it works, affect the rate of growth of these galaxies over time. This time would be to look at these same galaxies as they are now. If successful, this difference can tell a lot about black energy.

"The fluctuations measured by Planck are like a precise arrow from the beginning of the Universe, and we measured where the arrow landed with Subaru Hyper Suprime-Cam," said author of the paper, Surhud More, of the Interuniversity Center. astronomy and astrophysics.

That's exactly what the researchers have studied, notes the publication. The Hyper Suprime-Cam Survey uses an 820 megapixel sensor attached to an 8.2 meter wide Subaru telescope on the summit of Mount Maunakea. From the observatory, astronomers are scanning the space at billions of light-years away from galaxies.

Einstein's general relativity theories also spoke of gravitational lenses where gravity in space can actually twist the trajectory of light, so that distant objects appear bulged and distorted by observers since the Earth.

Researchers from around the world, including Japan, Taiwan and the United States, led by Kavli IPMU's Chiaki Hikage, have been studying these light distortions caused by gravity and have attempted to reconstruct the distribution of matter in the world. ;universe.

As a result of the study, the team compiled a map of regions where dark matter fluctuations have evolved over a multi-billion year scale.

"I had a long-time hope of undertaking high-precision cosmology research such as that carried out by WMAP and Planck.I am very pleased to share the measures of growth of dark matter structures in the world." Universe with HSC Subaru data ". said Hikage.

The team made its document available for reading and will submit its findings to the publication of the Japan Astronomical Society (PASJ) for peer review.