Chinese scientists have discovered chemical traces of the explosion of an ancient supermassive star as a double unstable supernova. Reported by the Chinese Academy of Sciences.
According to modern scientific concepts, the first stars in the universe were extremely large. Their mass can reach 140-260 suns, which affects their development and internal structure. In particular, in some cases they must flare up as binary unstable supernovas at the end of their existence. In them, due to extremely intense X-ray radiation, electron-positron pairs arose during quantum mechanical processes. The products of such epidemics should have left a chemical mark on the stars of the next generation, but scientists did not find it for a long time.
Zhao Gangu and his colleagues at the National Astronomical Observatory have succeeded. They recorded the chemical signatures of such supernovae in the galactic halo star LAMOST J1010+2358. This star was confirmed to form in a gas cloud dominated by double unstable supernova products produced by a star with a mass of 260 solar masses.
The most important feature of this star is the extremely low abundance of sodium and cobalt. The ratio of sodium to iron is about 100 times less than that of the Sun. There is also a huge difference in the contents of oddly and doubly charged elements such as sodium/magnesium and cobalt/nickel.
Dr. .Xing Qianfan.
ancient biologists to solvethis causes ticks to “throw” eggs like a cuckoo.