New data from the German space telescope shows: “There are no tensions”

The distribution of matter in the universe is a controversial topic. The eROSITA space telescope is now providing data that will aid the search.

Garshing – The infinity and complexity of the universe pose constant challenges to scientists. An example of this is the question of the expansion of the universe. There are two different measurement methods that produce different results – the “Hubble Potential”.

A similar dilemma arises when studying the distribution and pressure of matter in the universe. The so-called S8 parameter can be measured or predicted by the Standard Model of cosmology. This model has been modified to account for the cosmic microwave background (CMB), the residual radiation from the Big Bang. But here the difficulties begin: the value varies depending on the measurement method. If this “potential S8” is not resolved, this may indicate new physics.

eROSITA provides researchers with new data about the universe

More detailed information about the universe can help here. Two weeks ago, the first data from the German space telescope eROSITA were published. He surveyed the entire sky for the first time, collecting a wealth of data for research. EROSETA observes X-rays emitted by hot gas in galaxy clusters, and can thus precisely measure the total amount of matter in the universe and its clumping. And indeed: the new data eliminates the discrepancies, as in one notice Max Planck Institute for Extraterrestrial Physics (MPE).

“eROSITA tells us that the universe has behaved as expected throughout cosmic history,” explains Vittorio Gherardini, who is responsible for the cosmological study. “There's no tension with the CMB – maybe cosmologists can relax a little now,” he adds. Sciences The researcher becomes clearer: “This will make many theorists very sad. They want to find something new, but the theory works well.” It has been published on the ArXiv preprint server And submit it for publication in a specialized journal.

The research analyzes a large amount of data from eROSITA

“The cosmological parameters we measure from galaxy clusters agree with the latest CMB data and show that the same cosmological model has been in place from shortly after the Big Bang until the present day,” confirms Israa Bulbul, who leads the galaxy clusters and cosmology team at eROSITA. “Applies.”

Researchers continue to analyze the comprehensive data collected by eROSITA. “We may be on the verge of a new discovery,” comments Emmanuel Artis, a researcher at MPE, about his line of research. “If this can be confirmed, eROSITA will pave the way for exciting new theories beyond general relativity,” he adds.

Bulbul says the researchers are “excited about additional exciting discoveries that will deepen our understanding of the origins and evolution of our universe.” “Once the full data is evaluated, eROSITA will put our cosmological models to the most rigorous test ever seen in a galaxy cluster survey,” she adds.unpaid invoice)

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