August 6, 2020 | 1:25 PM IST
black hole

Chinese scientists discover black hole much massive than Sun

Chinese scientists discovered a stellar-mass black hole that is 68 times heftier than the Sun.  The scientists believe that such monster black hole forms following the death or explosion of a massive star and that there are more than 100 million stellar black holes in the Milky Way. The study has been published in the latest edition of journal Nature.
Prof LIU Jifeng of the National Astronomical Observatory of China of the Chinese Academy of Sciences (NAOC) and the head of the research team discovered this giant black hole named LB-1 at around 15,000 light-years away from the earth.

Prof LIU Jifeng said, “Black holes of such mass should not even exist in our Galaxy, according to most of the current models of stellar evolution. We thought that very massive stars with the chemical composition typical of our Galaxy must shed most of their gas in powerful stellar winds, as they approach the end of their life. Therefore, they should not leave behind such a massive remnant. LB-1 is twice as massive as what we thought possible. Now theorists will have to take up the challenge of explaining its formation.”

Before the discovery, the researchers estimated that the size limit of stellar black holes was less than 20 times the mass of the sun, but after this black hole was discovered the theory changed.

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