Researchers at the National Observatory of the Chinese Academy of Sciences recently published a paper in the journal Nature reporting that the largest stellar-scale black hole was found. Black holes are divided into star-level black holes, medium-mass black holes and supermassive black holes. One of the star-level black holes is formed by the death of a large mass star. The theory predicts that there are hundreds of millions of star-level black holes in the Milky Way, with a theoretical mass cap of 30 times that of the sun.
Chinese astronomers used Guo Shoujing telescope to discover a 70-fold solar-magnitude star-level black hole, well above the upper limit of the mass predicted by the theory, upsetting perceptions of the formation of star-level black holes, the authors suggest some speculation to explain the results.
But there is also a possibility: a miscalculation.
Three papers published on the preprint website challenge the findings. Two papers show that scientists did not analyze the data correctly, and a third using a binary system black hole theory model showed that their mass was much lower than claimed.
All three papers agree that the authors have made a series of false assumptions.