The last three years: multiband gravitational wave observations of stellar mass binary black holes

Over the final years of their life, stellar-mass binary black holes radiate gravitational waves that will be observable by both space-based (such as LISA) and ground-based instruments (such as LIGO, Virgo and the next generation observatories Cosmic Explorer and the Einstein Telescope). We present results from a full Bayesian parameter estimation on both the space and ground-based observations for some typical sources using state-of-the-art waveforms that include eccentricity and spin induced precession. We show multi-band observations of these sources allow for measurement of their 17 parameter with exquisite precision. Furthermore, we quantify advance time and accuracy of fore-warnings together with realistic three-dimensional source localizations. These multi-band sources will be a gold-mine for astrophysics studies.