Structure and Dynamics of Minidisks in Spinning Black Hole Binaries: Simulations in Full General Relativity*

We perform magnetohydrodynamic simulations of accreting, equal-mass binary black holes in full general relativity focusing on the structure and dynamics of minidisks. We build upon previous work which established the presence of minidisks in systems where the Hill-sphere is significantly larger than the effective innermost stable circular orbit. We explore the details of the structure of the minidisks and the impact of minidisk formation and black hole spin on accretion rates and other parameters of the system. We also investigate the impact of minidisk formation on periodic behaviors in the system in accretion rate, mass contained within the minidisks, and Poynting luminosities.