Saturday , June 19 2021

Astronomers find the star on the verge of mass explosion of the supernova



The astronomical team at the University of Sydney noted a star that was on the verge of collapse.

The star is in the binary system known as Apep (named after the Egyptian god of chaos) about 8,000 light years from Earth.

When he dies, the star will produce a massive celestial explosion as the supernova goes. Experts say it is likely to cause a dangerous burst of gamma ray whose characters have never been recorded on the Milky Way or any other star system.

Image Apep trapped in a thermal infrared system with VISIR camera on the VLT telescope in Europe's southern observatory in Chile. (Image: Professor Peter Tuthill / ESO)

Since the Apep system is binary, it means there are actually two stars in it. The one who is on the verge of collapse and another that is just as bitterly hot, but not quite at the end of his life.

The two stars are wrapped in elegantly shaped dust and gas.

Using spectroscopy, astronomers measured the speed of stellar winds (loaded starburst particles) as fast as 12 million miles per hour – about 1% of the speed of light.

Dr. Joe Callingham of the University of Sydney led a study of a star that was soon dead, which was published in the journal Nature Astronomy.

Supernova can lead to new stars (Image: NASA)

"We knew immediately that we found something quite exceptional: the light over the radio spectrum from infra-red air was out of the diagram," he said.

"When we saw the stunning dust lurking around these blazing shoots, we decided to call it the Apep – a monstrous snake goddess and the deadly Sun-god god Ra of Egyptian mythology.

Researchers think that Apep could be launched at the beginning of the gamma-ray creation, which is one of the most horrible events in the universe after the Big Bang itself.

Fortunately, it seems that Apep is not focused on the Earth, because the gamma-ray strike from this proximity could remove ozone from the atmosphere, drastically increasing our exposure to UV light from the sun.

An artist's impression of a double star system that combines the rapid casting of a white dwarf star (right) with electron power to almost light speed to an explosion of radiation at its accompanying red star (left) (Picture: M. GARLICK / WARWICK / ESO UNIVERSE)

"Finally, we can not be sure what the future has for Apep," commented Professor Peter Tuthill, head of the research group at the University of Sydney.

"The system could slow down enough to explode as a normal supernova, not because of gamma ray. However, in the meantime, it provides astronomers with a ring on the beautiful and dangerous physics that we have not seen in our galaxy yet.


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