January 22, 2022

Beyond Going Long

Complete UK News World

Scientists finally have an explanation for the incredibly bright light from the depths of space

Scientists say they finally have an explanation for the mysterious, bright blue light that came from the depths of space.

Three years ago, astronomers stunned a brilliant blue glow emanating from the spiral arm of a distant galaxy about 200 million light-years away.

The event, known as AT2018cow, was first discovered in June 2018 when it was observed by a survey in Hawaii, which quickly sent global alerts and asked other telescopes to look at it. They shone 100 times brighter than an ordinary supernova, the fastest explosion humanity has ever experienced.

It looked like a supernova, but it was clearer and faster than extreme events. Researchers tried to explain it and it became known as Fast Blue Optical Transition, or FBOT, without explaining how it happened.

More details about the incident made it seem more intertwined. The researchers found that it contained not only bright flashes of light, but also powerful X-ray pulses, as hundreds of millions of such pulses were traced to a single object.

These pulses occur regularly for 60 days, every 4.4 milliseconds.

The researchers used these pulses to calculate that the X-ray source should be no more than 1,000 kilometers wide and weigh less than 800 suns. This appears to indicate that it is something compact, like a small black hole or a neutron star.

So it seems that the mysterious flash most likely occurred when the star died – when it collapsed, a small black hole or neutron star was born. It devoured the material that surrounded it, swallowed up the star and released intense bursts of energy.

See also  The new drilling robot can conquer even the toughest rocks on earth

The results are presented in the new document “Evidence for a Compact Body After an Extragalactic Transition Cow AT2018”, published in natural astronomyAnd

“We have detected the birth of a compact object in a supernova,” says lead author Dheeraj “DJ” Basham, a scientist at MIT. “It happens with normal supernovae, but we haven’t seen it yet because it’s a chaotic process. We think this new evidence opens up opportunities to find tiny black holes or tiny neutron stars.”

Previous attempts to explain the flash suggested that it might be a black hole born in a supernova or a star that squished material from another passing star. However, astronomers have never been able to satisfactorily explain the flash using optical data alone, leading the researchers to look at the energy of X-rays behind a new paper.

This prompted them to examine regular pulses that could be used to obtain more information about the object emitting them. He said they ruled out the existence of a transitional black hole and led scientists to the current explanation.

Scientists say the same technology could be used to better understand other fast blue optical transmitters in the same family.

“Whenever a new event occurs, there is enthusiasm that it can reveal something new about the universe,” Basham says. “We have shown to FBOT that we can study their vibrations in detail in a way that is not possible in optics. So it is a new way to understand these emerging compact objects.”