Surprises from the spins: astrophysics and relativity with detections of spinning black-hole mergers
arXiv:1711.10038 · doi:10.1088/1742-6596/957/1/012014
Abstract
Measurements of black-hole spins are of crucial importance to fulfill the promise of gravitational-wave astronomy. On the astrophysics side, spins are perhaps the cleanest indicator of black-hole evolutionary processes, thus providing a preferred way to discriminate how LIGO's black holes form. On the relativity side, spins are responsible for peculiar dynamical phenomena (from precessional modulations in the long inspiral to gravitational-wave recoils at merger) which encode precious information on the underlying astrophysical processes. I present some examples to explore this deep and fascinating interplay between spin dynamics (relativity) and environmental effects (astrophysics). Black-hole spins indeed hide remarkable surprises on both fronts: morphologies, resonances, constraints on supernova kicks, multiple merger generations and more...
Proceedings of the 12th Amaldi conference on gravitational waves (Pasadena, CA, July 2017). Animated version of Fig. 2 available at https://davidegerosa.com/spinprecession
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