標題: Astronomers have identified an entirely new type of supernova formed [打印本頁] 作者: kafa88 時間: 2021-9-3 13:12 標題: Astronomers have identified an entirely new type of supernova formed
The debris from a massive cosmic explosion in a galaxy hundreds of millions of light years away is no ordinary supernova.From a new analysis of distant events This event occurs as a result of the merger between two objects. one of which is compact Whether it's a black hole or a neutron star Evidence of this incident is called VT J121001+495647. It was the first supernova to be detected.
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Caltech astronomer Dillon Dong said: “Theorists speculate that this could happen. But this is the first time we've actually seen such an event.The supernova was discovered during a 2017 celestial radio survey called the Very Large Array Sky Survey (VLASS). During the sweep,
the VLA picked up a very bright radio source that had never been seen in previous surveys. performed using the same telescope.Follow-up observations were made using both the VLA and the W.M. Keg Observatory, which studies the sky in optical and infrared wavelengths. reveal that the radio source actually exists And it corresponds
the expanding supernova debris that interacts with dust and gas.When a fast-moving supernova material expands into that material There will be shock and heat. It produces electromagnetic radiation that is so bright that we can detect it. Even from other galaxies, Dong and his team followed VT J121001+4959647. to a dwarf galaxy 480 million light years away.
They also studied the archives of that area of the sky. to indicate when VT J121001+4959647 may start to light up They found a soft X-ray burst picked up in 2014 by the Monitor of All Sky X-ray Image (MAXI) instrument aboard the International Space Station.All these observations enabled researchers to reconstruct the history of supernovae.作者: martina28043 時間: 2021-9-8 17:18
