[ad_1]
Still, the new theory states that black holes may not be black at all, writes livescience.com. According to the findings of a new study, black holes may be dark stars characterized by exotic physical phenomena that occur in the nucleus.
These dark stars are likely to emit strange radiation due to mysterious new physical phenomena. In turn, this radiation could help understand the dark matter in the Universe that attracts everything but does not emit light.
Dark stars
Regarding Albert Einstein’s theory of general relativity, which describes how matter distorts space-time, we know that in some giant stars the collapse process can reach a level such that the star shrinks to a point: the singularity .
When a singularity forms, an event horizon forms around it. It is a kind of one-way street in the Universe. At the event horizon, the gravitational pull of a black hole is so strong that you have to move faster than light to escape it.
Because it is not possible to exceed the speed of light under the current model of physics, any object that crosses the event horizon disappears for centuries. Hence the name “black hole”.
These simple but surprising claims have so far not been disproved, despite decades of observation and testing.
The astronomers saw how the black hole was absorbed by the atmosphere of the star. They managed to see stars flying around black holes.
On Earth, physicists captured gravitational waves formed by the collision of black holes. We were even able to photograph the “shadow” of the black hole, the cavity formed in the surrounding gas.
Despite this knowledge, black holes remain a mystery. The most important characteristic of a black hole, the singularity, appears to be physically impossible because matter cannot simply shrink to a point.
Planck nuclei
Consequently, the current understanding of black holes will eventually need to be updated or replaced by another theory that can explain what is at the center of the black hole. Of course, this challenge does not deter physicists from wanting to try to unravel the secrets of black holes.
In a theory of the singularity of black holes, matter that collapses to a smaller and smaller point is replaced by a slightly more acceptable variant: an extremely small point of extremely compressed matter. This is called the Planck nucleus because this theory assumes that the matter in the black hole is compressed to the smallest possible size, a Planck length of about 1.6 x 10.−35 meter.
If there were a Planck nucleus, that is, not a singularity, at the center of the black hole, it would no longer have an event horizon; there would be no place where the gravitational pull exceeds the speed of light. It is true that for outside observers, the gravitational pull would be so strong that it would be no different from the event horizon. Only in the case of highly sensitive observations, which are not yet possible with available technology, can we notice a difference.
Dark matter
Radical problems require radical solutions, so replacing the “singularity” with the “Planck nucleus” is not fiction, although this theory is only a sketch of general characteristics without physical and mathematical models to describe such an environment with confidence. In other words, the Planck nuclei are just the fruit of the rain of thoughts.
Offering a variety of theories is not a bad choice, as explaining uniqueness requires really unconventional thinking. In addition, important discoveries unrelated to black holes can be made, such as unraveling the mystery of dark matter.
Dark matter makes up 85 percent. The masses of the universe, however, do not interact with light at all. Its existence can only be determined from the gravitational effect on ordinary light matter. For example: by observing the stars that orbit the centers of galaxies, we can calculate the mass of a particular galaxy based on the orbital speed of the stars.
In a new job, February 15. Physicist Igor Nikitin, from the Fraunhofer Institute for Scientific Algorithms and Computing in Germany, further develops the idea of ”radical singularity” in an arXiv database published in 2007. According to the scientist, Planck nuclei can emit particles (due to that there is no event horizon, these black holes are not completely black). These particles would already be known or completely new.
Perhaps they would help reveal the nature of dark matter. As Nikitin wrote, if black holes are indeed Planck stars and constantly emit a stream of dark matter, they could explain the motion of the stars that make up galaxies.
For one thing, the physicist’s idea probably wouldn’t stand up to further scrutiny (the evidence for dark matter is far more than its effect on stellar motion). On the other hand, this hypothesis is a good example of why as many ideas as possible should be suggested to explain black holes, because we can never know how they are related to other unimaginable mysteries of the Universe.
It is strictly forbidden to use the information published by DELFI on other websites, in the media or elsewhere, or to distribute our material in any way without consent, and if consent has been obtained, it is necessary to indicate DELFI as the source.
[ad_2]
