Speaker
Description
Dense young star clusters (YSCs) are ideal environments for close encounters between stars and stellar-mass black holes, giving rise to micro-tidal disruption events (micro-TDEs) transient phenomena with potential multi-messenger signatures in both the electromagnetic and gravitational wave domains. We present results from a suite of 3600 direct N-body simulations of YSCs, performed with a customised version of the PeTar code incorporating new micro-TDE prescriptions, covering a wide range of cluster masses, densities, and metallicities.
We identify three main dynamical channels: single encounters, binary-mediated interactions, and higher-order multiples. The latter dominates, accounting for ~90% of all events. The gravitational wave signal from micro-TDEs peaks in the deci-Hertz band, making them promising targets for future detectors such as LGWA and DECIGO. Combined with their expected electromagnetic signatures detectable by LSST, micro-TDEs emerge as multi-messenger probes of the dormant stellar-mass black hole population in dense stellar environments.