Classifying binary black holes from Population III stars with the Einstein Telescope: a machine-learning approach

Population 3 stars are like “the original” stars. Those formed with material that comes straight from the Big Bang. It would be very (like, a lot!) cool to see them with gravitational-wave detectors. But can we tell them apart? Or do they look like all the other stars? Here is an attempt with a fancy machine-learning classifier.

F. Santoliquido, U. Dupletsa, J. Tissino, M. Branchesi, F. Iacovelli, G. Iorio, M. Mapelli, D. Gerosa, J. Harms, M. Pasquato.
Astronomy & Astrophysics 690 (2024) A362. arXiv:2404.10048 [astro-ph.HE].