Wednesday , April 14 2021

The black hole releases radio bursts after years, it should be possible



Researchers at the Jewish University of Jerusalem (HUJI) have found that the first signs of radio bursts radiated long after the Black Hole star was destroyed.

Radio bursts emitted by stars destroyed by black holes are not new in themselves, and scientists have known this in the past. But this only happens immediately, and the radiation of the radio continues long after the destruction of the star.

But a team of researchers – Dr. from the Hachi Racha Institute of Physics. Asaf Horesh and Director of NASA’s Swift Space Telescope at Tel Aviv University, Professor Brad Seno and Dr. Led by Iyer Arkawi – exactly who is looking for the broadcast months. Even after years.

“According to current theories about the occurrence of these events, if radio broadcasts are not detected immediately after the outage, there is no presumption that the event should occur,” Horesh said in a statement.

“However, we decided to do the last radio surveillance six months after the star’s catastrophe, and surprisingly discovered clear radio broadcasts. Once we discovered this delayed radio burst, we did it in one year. Data continued to be collected during which time “In addition, we found a second delayed explosion four years after the discovery of the original star disturbance. This is the first discovery of such delayed radio bursts from such events, when a star is interrupted by a black hole.”(Photo credit: Jewish University of Jerusalem)

It is not clear what caused these delayed radio bursts, as they defy existing black hole theories and how these radio bursts work. As a result of this discovery, completely new models will have to be developed to better understand this phenomenon. However, scientists are well aware that this may not be an isolated phenomenon – and in fact it may be common and simply never detected before.

One of the possible theories put forward by the team was that after the star was destroyed, a large amount of debris was finally pulled into the hole. However, the mechanism is unclear.

“What caused the delay and the exact physiological processes responsible for such delayed emissions are still open questions,” Horesh said.

“In light of this discovery, we are actively looking for delayed radio bursts in other tidal events.”

This study came after a successful search for black holes by scientists at the Israel-Institute of Technology. Measure the temperature of the Hawking radiation

The discovery was in line with predictions about its strength and temperature, which depended on the black hole itself, but later there was a sudden explosion in her life. Scientists speculated that this was due to the creation of an inner horizon in a black hole, where sound waves were no longer recorded.

It was not part of Stephen Hawking’s original theories about the black hole – which he called Hawking’s radiation – that made it completely unprecedented and showed how many of these mysterious celestial bodies remained. Something needs to be learned.

And like Horesh, a technical scientist, Dr. Jeff Steinhauer is determined to go beyond basic analysis and theory to understand how black holes work.




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