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    Default Chinese Scientists Discover a Black Hole That Shouldn't Exist

    Chinese Scientists Discover a Black Hole That Shouldn't Exist

    A wide star–Black-Hole binary system from radial-velocity measurements

    All stellar-mass black holes have hitherto been identified by X-rays emitted from gas that is accreting onto the black hole from a companion star. These systems are all binaries with a black-hole mass that is less than 30 times that of the Sun1,2,3,4. Theory predicts, however, that X-ray-emitting systems form a minority of the total population of star–black-hole binaries5,6. When the black hole is not accreting gas, it can be found through radial-velocity measurements of the motion of the companion star.

    Here we report radial-velocity measurements taken over two years of the Galactic B-type star, LB-1. We find that the motion of the B star and an accompanying Hα emission line require the presence of a dark companion with a mass of 68+1113 solar masses, which can only be a black hole. The long orbital period of 78.9 days shows that this is a wide binary system.

    Gravitational-wave experiments have detected black holes of similar mass, but the formation of such massive ones in a high-metallicity environment would be extremely challenging within current stellar evolution theories.

    • Scientists may have discovered whole New Class of Black Holes
    • We’ve found a Black Hole that may be smaller than any ever seen before
    • Scientists Discover That This Baffling Black Hole Is Way Smaller Than They Thought It Was

    What If a Tiny Black Hole Appeared Next To Earth?
    Last edited by ExomatrixTV; 3rd December 2019 at 00:40.
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