Probing Ultralight Bosons with Binary Black Holes

Ultralight bosons exist in various proposed extensions to the Standard Model, which can form condensates around rapidly rotating black holes through a process called superradiance. These boson clouds have many interesting observational consequences, such as the continuous emission of monochromatic gravitational waves.  In this talk, I will describe the dynamics of the system when it is part of a binary black hole. I will show that the presence of a binary companion greatly enriches the evolution of the boson clouds, most remarkably through the existence of resonant transitions between growing and decaying modes of the clouds. Finally, I will sketch some phenomenological consequences, both for the gravitational waves emitted by the clouds and the finite-size effects imprinted in the waveforms of the binary signal.

Collection/Series: 
Event Type: 
Seminar
Scientific Area(s): 
Event Date: 
Tuesday, May 8, 2018 - 13:00 to 14:30
Location: 
Space Room
Room #: 
400