Simulating Spinning Binary Black Holes with SpECTRE

While most binary black holes observed so far are consistent with zero spin, gravitational-wave observations like GW231123 and electromagnetically inferred spins of some black holes (such as Cygnus X-1) suggest that rapidly spinning black holes could be among the binaries that current and future gravitational-wave detectors will observe. Learning as much as we can from these observations without bias will require highly accurate numerical-relativity models of the black holes and the waves they emit. SpECTRE is a next-generation, open-source numerical-relativity code aiming to model binary black holes at the high accuracies needed for future observatories. In this talk, I will present an update on simulating binary black holes with SpECTRE, focusing specifically on the case of binaries whose black holes are spinning.