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A fireball in a lab might be a black hole

Avi Blizovsky

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Creating the conditions for the formation of a black hole is one of the goals of particle physics. The ash ball created in the American accelerator has the characteristics of a black hole, say physicists.
This fireball was created at the Relativistic Heavy Ion Collider (RHIC) particle accelerator in New York, by bombarding gold nuclei at each other with powerful beams at near the speed of light.
Horacio Nastasa said that his calculations show that the core of the fireball has properties similar to those of a black hole. His work was published on the arxiv.org website in the category of pre-publication and the report about it was published in the journal New Scientist.
When the gold nuclei crashed into each other they broke into their constituent particles: quarks and gluons. These particles create a plasma 300 times hotter than the surface of the sun. The fireball, which lasted only a tenth of a billionth of a second, was detectable because it swallowed jets of particles created by the collision of the nuclei. However, Nastasa, of Brown University in Providence, Rhode Island, said that this experiment was unusual: more than 10 times more jets of this type were absorbed by the fireball than the scientists' prediction made through calculations. The researcher believes that the particles disappeared into the core of the fireball and reappeared as heat radiation, as is supposed to happen to matter that falls into a black hole and comes out as "Hawking radiation".
However, even if the plasma ball was indeed a black hole, it would not pose a threat to Earth. At the distances and energies involved, gravity is not the dominant force in a black hole. The accelerator, RHIC is located at Brookhaven National Laboratory.

For news at the BBC
They knew black holes

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