MACHO-BHs as dark-matter candidate; LIGO-O1+O2+O3 merger-rate places upper-bound on PBH fraction f_DM at masses 1-100 solar-mass; current bounds f_DM < 0.01 in this range; subsolar-PBH constraints from EROS + OGLE.
MACHO-BHs as dark-matter candidate; LIGO-O1+O2+O3 merger-rate places upper-bound on PBH fraction f_DM at masses 1-100 solar-mass; current bounds f_DM < 0.01 in this range; subsolar-PBH constraints from EROS + OGLE.