The invisible force affects our universe. We cannot see it and we cannot detect it – but we can see how it interacts gravitatively with what we can see and detect, such as Light
The international astronomer team has now used one of the most powerful telescopes in the world to analyze this effect in the context of the 10 million galaxies of Einstein's general relativity. The result? The most comprehensive map of dark matter throughout the universe's history to date
He has yet to complete a peer review, but the map has offered something unexpected – that dark matter structures may develop slower than previously predicted. 19659003] "If it turns out that we are really right, it shows that our current understanding of the standard model and the general theory of relativity lacks something," said Chiaki, physicist at the Institute of Physics and Mathematics at Kavli.
We do not know what dark matter is. We know that the gravitational effects that we see in the Universe cannot be traced back to the materials we observe. For example, the speed of rotation of galaxies would be completely different if it were based solely on the severity of the observed mass
. This effect can also be used to measure dark matter – when you subtract the gravitational effect of visible material, what you leave is the gravitational effect of dark matter
This is a common method for finding dark materials and what Hikage team used. They deployed a 8.2 m high Subaru 870-megapixel Hyper Suprime-Cam to reach the galaxies billions of light-years away.
Because their light took so long to reach us, we see them because they were billions of years before, which means that the map covers a huge part of the universe's history, allowing astronomers to watch how dark matter has evolved over billions of years [19659003
. The universe is a dark matter corresponding to the results of previous studies, except the speed at which structures evolve. According to this new map, it is slower than predicted by previous results
Not much but stand out as strange. This means the jury still does not agree with what it means. This may mean that the standard model lacks something that is quite amazing; or it may mean statistical fluctuations.
It may also be until we also learn. The Group has been working on this project since 2014, using only first year estimates, or 11 percent. Hyper Suprime-Cam surveys that are not yet complete. Shooting is scheduled to end in 2020
So let's not forget too excited – we still have to do a whole bunch of work. But this is still an intriguing result, and we look forward to more information with inspired breathing
"With a little more work if we can get better accuracy, we could find something specific," said Hikage. "It's a great motivational factor for me."
Team research was adopted in Japanese Society of Astronomy and can be read in detail on a pre-printed server arXiv. ]