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gr-qc2026
Constraining Ultralight Scalars with Black Hole Binary Mergers in Galactic Nuclei
Majed Khalaf, Eric Kuflik, Alessandro Lenoci +2
Ultralight scalars can form long-lived, macroscopic bound states around spinning black holes, known as superradiance clouds. These clouds provide an additional channel for energy d…
gr-qc2025★ 4 cited
Self-Gravity in Superradiance Clouds: Implications for Binary Dynamics and Observational Prospects
Hyungjin Kim, Alessandro Lenoci
Spinning black holes could produce ultralight particles via the superradiance instability. These particles form a dense cloud around the host black hole, introducing new opportunit…