Close encounters between stars and black holes can trigger micro-tidal disruption events (micro-TDEs) in dense young star clusters (YSCs). Using direct N-body simulations with PETAR, we found that most micro-TDEs arise from few-body multiple encounters. The inferred rate is approximately 350-450 Gpc−3 yr−1. Micro-TDEs could be detected both by upcoming surveys such as LSST, expected to observe roughly 10-100 events per year, and by their gravitational-wave (GW) signals peaking in the deci-Hertz band, detectable with future instruments such as LGWA and DECIGO.
@article{arxiv.2509.12318,
title = {Star-Black Hole Interactions in Young Star Clusters},
author = {Sara Rastello and Giuliano Iorio and Mark Gieles and Long Wang},
journal= {arXiv preprint arXiv:2509.12318},
year = {2025}
}
Comments
Proceedings contribution to IAU Symposium 398 (MODEST-25); to appear in the IAU Proceedings Series. 4 pages, 3 figures