Can Cosmologically Coupled Mass Growth of Black Holes Solve the Mass Gap Problem?

• Published in: The Astrophysical journal Vol. 956; no. 2; pp. 128 - 134
• Main Authors: Gao, Shi-Jie, Li, Xiang-Dong
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 01.10.2023; IOP Publishing
• Subjects: Astrophysics; Black holes; Dark energy; Elliptical galaxies; Evolution; Expanding universe; Galactic disk; Hypotheses; Low-mass x-ray binary stars; Neutron stars; Stellar mass black holes; Universe; X ray binaries; X ray stars

Observations of elliptical galaxies suggest that black holes (BHs) might serve as dark energy candidates, coupled to the expansion of the Universe. According to this hypothesis, the mass of a BH could increase as the Universe expands. BH low-mass X-ray binaries (LMXBs) in the Galactic disk were born...