Evidence Grows That Dark Energy Changes Over Time

Designed to make a desi: Take precision measurements (both close and distant) by determining galaxies and trangles in 11 billion years. This information may desire to determine how fast the universe is at every point of all time, it will be better to model a better energy affecting this expansion.

A tendency up

Last year’s results, based on the analysis of a full precision of the full-time information from the spacecraft in seven different languages, although the most accurate accuracy of the highest circuit (8 to 11 billion years) is a basic contract with the CDM model (space microwave background radiation and type IA Supernova), some subtle The differences were cut.

Basically, these differences suggested that the dark energy weakened. In terms of trust, the results of the DESI has 2.6 Sigma for information combined with the CMM database. In addition to Supernova data, these numbers rose to 2.5-sigma, 3.5-sigma or 3.9-sigma, 3.9-sigma level, depending on the database of SuperNova.

It is important to connect the desi data with other independent measurements, because “We’re Sequence”, Desi Co-Spockeperson will Percival of Waterloo University. “All different experiences are how fast it will be in the universe today, but it does not work, it does not work. Settings for the main features of that model.”

This latest results cover the first three years of the collected data covering about 15 million galaxies and choses. Once again, Desi information was only consistent with Lambda CDM, ie the dark energy is stable. And when combined with other databases – CMB, Supernovae and Poor Charm Long-License Research-Strong Tips, turned out that dark energy can change over time. The level of confidence varies between 2.8 and 4.2 depending on the combination of the diverse – ashamed of five-sigma.

This can hit as a growing progress in the average citizen, but the reality is more complicated. “Deli information itself is not an increase,” he said. “We have more than one year information from one year of information. This is a lot of overlapping, not on the growing area, but the measurements are much better. They are better than this balance between the region.”