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  • 2021年07月14日
    Astronomers Spot Spectacular Rings Being Emitted From Black Hole

    July 14, 2021: A spectacular set of rings around a black hole has been captured using NASA‘s Chandra X-ray Observatory and Neil Gehrels Swift Observatory...The X-ray images of the giant rings have revealed new information about dust located in our Galaxy, using a similar principle to the X-rays performed in doctor‘s offices and airports...The black hole is part of a binary system called V404 Cygni, located about 7,800 light-years away from Earth. The black hole is actively pulling material away from a companion star ââ¬â with about half the mass of the Sun ââ¬â into a disk around the invisible object. This material glows in X-rays, so astronomers refer to these systems as ‘‘X-ray binaries.‘‘..On June 5 2015, Swift discovered a burst of X-rays from V404 Cygni. The burst created the high-energy rings from a phenomenon known as light echoes. Instead of sound waves bouncing off a canyon wall, the light echoes around V404 Cygni were produced when a burst of X-rays from the black hole system bounced off of dus...

    商品コード: 2021081000193

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