Stephen Hawking was a físic, theorist, cosmologist, and an English writer. According to his theory, the black holes in space usually leak thermal radiation which can make it evaporate and explode after a period of time. Until now this was a concept that was never really proved, but researchers found a way to change that.
At first, Hawkins hypothesis was developed 50 years ago and has not been proved yet. This is because supermassive black holes take billions of years to evaporate completely. The solution to this problem is to observe black holes with just millions of tons, or to analyze some of its pieces in space. The researchers did that.
During the study, the scientists suggested that when giant black holes collide on a catastrophic phenomenon, small, in fact, with minimum size and hot, pieces of black holes, can be launched in space. The researchers are excited because this is the chance to prove Hawking's theory that they are evaporating from the radiation.
Hawking's hypothesis was published in 1974 in Nature Magazine. He wrote a letter considering the implications of quantum physics on the black hole formation. In his study he also presented general relativity, which means he united two theories in one. Researchers thought in the past that they wouldn't combine.
The scientists suggested in their studies that, the smaller the black hole, the evaporation goes faster, and the supermassive with millions or billions of dollar masses, take more time to leak completely, more than the universe will last. Most black holes cannot emit thermal radiation, or they can't be detected.
It's important to say that the bigger the object, the colder it is. The heaviest black holes are colder than the cosmic radiation in the background, and, according to the second law of thermodynamics, the heat can't escape from a colder place to a hotter one. So, the smallests black holes enter the scene, with asteroid masses.
They are called “Bocconcini di Buchi Neri”. If the study is right, in the formation of these small objects during a black hole collision with supermasses, it will be easier to detect Hawking's radiation. According to Giacomo Cacciapaglia, a researcher, they are hotter and evaporate faster than usual.
Only one kind of black hole can emit Hawking's radiation, the lighter ones. The study proposes that this kind of object can be produced and ejected during a black hole fusion, and start to irradiate right after their creation. A large number of black hole pieces would be produced close to the place where the fusion happened.
It is estimated that these little objects would emit Hawking's radiation each time faster, speeding towards its end. A black hole with 20 tons of mass would take around 16 years to evaporate completely. They are too small to be observed closely, so the researchers are looking in places where the gamma ray explosions could happen closer to regions where a black hole fusion was detected.