- 3387 - GALAXY - seen in radio waves? Astronomers have produced the most comprehensive image of radio emission from the nearest actively feeding supermassive blackhole to Earth. The emission is powered by a central blackhole in the galaxy Centaurus A, about 12 million light years away.
--------------------- 3387 - GALAXY - seen in radio waves?
- As the blackhole feeds on in-falling gas, it ejects material at near light-speed, causing 'radio bubbles' to grow over hundreds of millions of years. When viewed from Earth, the eruption from “Centaurus A” now extends eight degrees across the sky, the length of 16 full Moons laid side by side.1/1/22
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- These radio waves come from material being sucked into the supermassive blackhole in the middle of the galaxy. It forms a disc around the blackhole, and as the matter gets ripped apart going close to the blackhole, powerful jets form on either side of the disc, ejecting most of the material back out into space, to distances of more than a million light years.
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- Previous radio observations could not handle the extreme brightness of the jets and details of the larger area surrounding the galaxy were distorted, but our new image overcomes these limitations. Centaurus A is the closest radio galaxy to our own Milky Way.
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- Astronomers have been able to combine the radio observations with optical and X-ray data, to help us better understand the physics of these supermassive blackholes.
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- Centaurus A is a giant elliptical active galaxy 12 million light-years away. At its heart lies a blackhole with a mass of 55 million suns. Clouds of cold gas condense in the galactic halo and rain down onto the central regions, feeding the supermassive blackhole.
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- Triggered by this rain, the blackhole vigorously reacts by launching energy back via radio jets that inflate the spectacular lobes. Astronomers have learned how to see radio waves. How Amazing!
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- December 31, 2021 GALAXY - seen in radio waves? 3387
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