Garguian Yuvi flash from a supernova is now a cosmic mystery


White dwarf stars have been doing some weird things lately. There he was, who was half-burnt on the Milky Way, and now a white dwarf who had gone supernova was found emitting a demonic and mysterious UV flash.

This is not your typical supernova. Whatever it is, because it is not yet a name, the occurrence of a white dwarf explosion in UV light is so rare that it has only been seen a second time. No one knows how or why this happens yet. Finding out what sets off such a flash can help uncover even more dark secrets, how the universe creates the universe from which cosmic acceleration is thought to be caused by dark energy. Northwestern University astrophysicist Adam Miller and his team of researchers may be able to find out.

“Some of the most common explosions in the universe are,” Miller, who recently published a study The Astrophysical Journal, Said in a press release. “But what is special is this UV flash. Astronomers have searched for it for years and never found it. “

There is certainly something unusual about this cosmic outbreak (now known as SN2019yvq). Type Ia (one-A) supernovae are the typical way binary white dwarf systems enter the throes of their death, although they do not always do exactly what they started. Many are also exaggerated and are known to be the brightest supernovae. White dwarfs made of carbon and oxygen continue to accumulate star stuff until they reach a threshold at which they explode – the Chandrasekhar limit of 1.4 solar masses. It is believed that white mass has the maximum mass that a neutron can reach without colliding in a star or black hole.

The first sight of a strange supernova was in the human eye, the day it exploded. Using the Zwicky Transient facility in California, researchers were able to tell that it happened right next to the Draco constellation, and astronomers took a closer look at X-rays and UV wavelengths at NASA’s Neil Gorls Swift Observatory. SN2019yvq was initially classified as a type Ia. It almost passed for one, but the intense UV emission could not be ignored. It was not a flash that went off in a blink. This lasted for several days, implying that something must have been unintentionally hot or at least close to the dying star. Leaving the white dwarf cool when they fall.

UV light requires something at least three or four times warmer than the sun to produce this intense. It is invisible to us because UV wavelengths are too short for our eye to process, and X-rays also have shorter wavelengths. Earlier, another team of researchers had found ways to determine the characteristics of superlinearine supernovae using such light. Computer simulations that showed phenomena in the UV wavelength are how the detonation mechanism behind it was determined, and that method can be used to identify detonation mechanisms in other supernovae. It goes beyond this.

“Most supernovas are not hot, so you don’t get very intense UV radiation. Some very unusual phenomena happened with this supernova,” Miller said.

Miller has four hypotheses as to how this can happen. A dying white dwarf may contain gas and dust the IA supernova pathway, explode when it exceeds the limit, and cause the UV flash to collide with another star in its binary system. . It may have had superhot radioactive material at its core that heats the outer outer casing past the point of no return. There is a chance helium that would have raised the star’s temperature so much that it would cause a double explosion, including a UV flash. Finally, it is possible that vast amounts of UV radiation ignited the universe when two white dwarfs merged into the star system and collided with remnants of the explosion.

According to Miller, in fact due to these real-life films, special effects can only appear in a year. Ezeka will travel back and forth from the source until the core of the explosion is exposed. Activate suspense.

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