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澳门金沙官方登录网址:A hole is born

作者:慕容凵    发布时间:2019-03-07 14:09:00    

THE largest optical telescope in the world has found the first direct evidence of the birth of a black hole. Rafael Rebolo of the Canaries Astrophysics Institute in Tenerife and his colleagues used the Keck Telescope in Hawaii to test the theory that black holes form from massive stars. The team analysed the chemical composition of a star orbiting a black hole in our galaxy and found an overabundance of heavy elements such as oxygen and sulphur. “The star is not much bigger than our Sun,” says Rebolo. “There is no way it could have produced these nuclei.” The researchers think the nearby black hole was once a giant star which exploded as a supernova and contaminated the atmosphere of its companion before forming the black hole (Nature, vol 401,

 

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