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Illustration of two connected black holes. | Credit: ESA
For many years, cosmologists have fought against Hablo tension, disagreement between today’s universe expansion speed measurements. One promising solution to this problem is the loss of mass as black holes blend. However, new research shows that this will probably not work, so the secret remains.
2022 Astronomers began to notice something strange by measuring Hablo ConstantA unit of measurement used to describe the speed of expansion of the universe. The values of constants derived from early observations of the universe The background of space microwavewere significantly smaller than measurements made in a modern universe in a nearby.
Over the years, this discrepancy only deepened, and cosmologists have been looking for an explanation in vain.
Cosmological models assume that the amount of matter in the universe remains constant, so one chance of facilitating the tension is that the material in the universe somehow disappears. Several theories suggested Dark matter can degrade the invisible form of radiation. However, we do not understand what is first and foremost “Dark Mater”, so those ideas remain firmly hypothetical.
However, there is a known way to destroy the subject: Black holes; This is not the formation of black holes themselves. The most important that falls below Horizon of the event still exists; It’s just locked in the image. But when black holes blend, they turn a huge amount of mass into pure energy, form Gravitational waves; The typical connection of two small black holes releases several Suns value energy.
Those gravitational waves go into the universe. The Mass that created them no longer exists. We can directly measure gravitational waves with such instruments Laser interferometer gravitational waves observatory and indirectly sees their influence through the Pulsar time -detecting arrays. So it is a known, proven thing to destroy matter in the universe.
But is that enough to take into account Hablo tension? Recently, a team of astrophysicists at the University of Vanderbilt began working in answering this question.
They found that in order to destroy enough things to explain Hablo tension, the black holes would have to blend unrealistically. We can estimate the true speed of merger from mass stars made in the universe, how often they die and turn into black holes and how effectively they face each other.
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The actual number of black holes merger is approximately 10,000 times lower than the number required to explain the Hablo stress. So, even if you take into account paper Submitted by the Preprint Database ARXIV.
Although the results that have not yet been reviewed do not relieve Hablo tension, they still reflect an important step. Faced with any mystery, great or small, scientists have to examine every possibility of each stone, such as space detectives. Only through slow, persistent, careful work will we find answers to our most rude secrets.