Population Properties of Compact Objects from the Second LIGO-Virgo Gravitational-Wave Transient Catalog

At the first half of advanced LIGO/Virgo’s third observing run we have confidently observed 44 binary black hole mergers. Using these binary black hole mergers we provide updated constraints on the distribution of black hole merger masses, spins, and redshifts. We find initial evidence for structure beyond a power-law mass distribution and binary black hole precession.