UNITED STATES (VOP TODAY NEWS) – To understand whether there is a heavy dark matter and what properties it has, you can, watching the mergers of dwarf galaxies – this is the conclusion reached by a team of theoretical physicists from the University of Zurich, writes the Astrophysical Journal Letters.
Thus, scientists concluded that, since invisible dark matter is present in large quantities in dwarf galaxies, the frequency of their mergers, as well as the frequency of mergers of black holes in them, can tell about the properties of dark matter.
In particular, the model created by physicists showed that the behavior of central black holes in such galaxies depends on the density of dark matter in their center and on the periphery.
Watching for mergers of black holes, namely the radiation of low-frequency gravitational waves, which occurs when they are combined, will be the LISA orbital gravitational observatory, whose construction will begin in the mid-2020s.
Dark matter makes up 75% of the mass of matter in the Universe. However, its traces were not found on Earth, which made some scientists doubt its existence.
However, in April last year, astrophysicists said that they were able to take the first picture of dark matter.