在我们星系附近发现的”指环王"可能是超新星爆炸的痕迹

[lindamy]

有可能这是人类第一次真正发现超新星形成的遗迹。​

WHEN A MYSTERIOUS RING WAS DISCOVERED NEAR OUR GALAXY IT MAY BE THE FIRST KNOWN TRACES OF A RECENT SUPERNOVA EXPLOSION​

William B
May 17, 2022

In intergalactic space, the invisible object is very difficult to detect in the optical and infrared range. Radio astronomy remains a salvation, and with the latest radio telescopes, we can look at the Universe around us in a new way. ASKAP radio interferometer at the Murchison Observatory in Western Australia, opened an ideal round shape with a location on its intergalactic space, not far from our galaxy.

An example of a remnant of the Supernova n. 1987A. Image Source: NASA/CXC/A. Hobart, New York:

The astronomical object, known as the “J0624-6948” identifier, is located near the nearest galaxie, the Large Magellanic Cloud. The object was assigned to a new astronomical phenomenon, ORC (Odd Radio Circle), or, in Russian, to strange radio circles. Over the past two years, there have been five Orion objects discovered; J0624-6948 could be the sixth such discovery, but it looks like it won’t work, which doesn’t detract from the work of astronomers.

The Western Sydney University researchers (together with an international team of experts) analysed J0624-6948 and published results of scientific work in a prestigious journal Monthly Notices of the Royal Astronomical Society.

When we first discovered this almost entirely round radio object, we thought it was another ORC (Add) radio circle, but because of the further observations, it was obvious it would be much more likely that something else, said Professor Miroslav Filipovic of the University of Western Sydney.

The discovery ring has significant differences between five other known strange radio circles that is a more balanced radio spectral index, it is a distant central galaxy, and a visible galaxy as the potential host, the absence of any spotted a significant apparent size all this suggests that this may be the discovery of a different type of object.

The mysterious ring was located at J0624-6948. Image Source: CSIRO.

The most plausible explanation is that the object was a intergalactic remnant of a supernova exploded on the edge of the Big Magellanic Cloud by a Type Ia supernova that exploded in the world with two stars orbiting each other, said Professor Filipovich. If so, this is the first time the real discovery is that a small supernova remnant has been discovered that spread out in a rare intergalactic medium where nobody expected to find something like that.

If it were a supernova, then it exploded between 2200 and 7100 years ago. Recently, at astronomical standards. After the discovery of the object, so many questions remained: we will force astronomers to explore this space more than once.

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When a mysterious ring was discovered near our galaxy it may be the first known traces of a recent supernova explosion - Game News 24

In intergalactic space, the invisible object is very difficult to detect in the optical and infrared range. Radio astronomy remains a salvation, and with the

game-news24.com

 

[lindamy]

哈勃望远镜发现在白矮星爆炸死亡后存留下的星体​

Hubble Space Telescope spots star that survived violent explosion of neighbor​

By Samantha Mathewson published 7 days ago

An artist's depiction of a supernova blasting a companion star, seen in the lower right. (Image credit: NASA, ESA, Leah Hustak (STScI))

NASA's most iconic space telescope has spotted a star that survived the violent death of its companion.

When a massive star reaches the end of its life, it explodes in a brilliant burst of light, also known as a supernova. This bright explosion can briefly outshine entire galaxies, which is how the star's surviving partner remained hidden from view — until now. Using the Hubble Space Telescope's Wide Field Camera 3, researchers were able to study the supernova, dubbed SN 2013ge, in ultraviolet light. The scientists found that while the light from the bright stellar explosion has been fading since 2016, another nearby source of ultraviolet light has maintained its brightness over time, suggesting SN 2013ge has a surviving binary companion, according to a statement from NASA.

"This was the moment we had been waiting for, finally seeing the evidence for a binary system progenitor of a fully stripped supernova," Ori Fox, an astronomer from the Space Telescope Science Institute in Maryland and lead investigator on the Hubble research program, said in the statement. "The goal is to move this area of study from theory to working with data and seeing what these systems really look like."

Hubble Space Telescope spots star that survived violent explosion of neighbor

NASA's Hubble Space Telescope spotted supernova 2013ge and its surviving stellar companion, which was previously hidden behind the bright glare of the supernova.

www.space.com