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gr-qc2023
Superradiance: Axionic Couplings and Plasma Effects
Thomas F. M. Spieksma, Enrico Cannizzaro, Taishi Ikeda +2
Spinning black holes can transfer a significant fraction of their energy to ultralight bosonic fields via superradiance, condensing them in a co-rotating structure or "cloud". This…
gr-qc2023★ 78 cited
Dynamical Friction in Gravitational Atoms
Giovanni Maria Tomaselli, Thomas F. M. Spieksma, Gianfranco Bertone
Due to superradiant instabilities, clouds of ultralight bosons can spontaneously grow around rotating black holes, creating so-called "gravitational atoms". In this work, we study…