Over the past six decades, scientists have discovered two dozen stellar-mass black holes using X-ray methods. These black holes have a mass distribution mainly between 25 solar mas, which shows a scarcity of black holes with masses ranging from 3 to 5 solar masses.

Researchers in China have uncovered a low-mass black hole within the elusive mass-gap, defying previous scientific consensus. By combining radial velocity and astrometry, they identified this black hole in a wide binary system,

Chinese researchers have discovered a promising mass-gap black hole using radial velocity and astrometry methods. The study was published online in Nature Astronomy on Sept. 10, and was conducted by a team led by Dr.

Over the past six decades, scientists have discovered two dozen stellar-mass black holes using X-ray methods. The mass distribution of these black holes, mainly between five to 25 solar masses, shows a scarcity of black holes with masses ranging from three to five solar masses.

Chinese astronomers have uncovered a low-mass black hole that challenges long-held astrophysical theories. This black hole, part of a binary system known as G3425, has a mass of about 3.6 solar masses,