Self-interaction effects on the Kerr black hole superradiance and their observational implications
arXiv:2503.10347 · doi:10.1103/xmhn-cpv4
Abstract
Through the black hole (BH) superradiance, ultralight bosons can form dense clouds around rotating Kerr BHs. Certain ultralight bosons, such as axions and axion-like particles (promising dark matter candidates), naturally possess self-interactions, and thus may significantly modify the dynamics of the superradiance process. Previous studies on the detection or constraint of ultralight bosons through superradiance have usually neglected the self-interaction effects of bosons. In this work, we investigate the formation and evolution of self-interacting boson clouds in the full Kerr spacetime during BH superradiance. Using numerical methods, we compute the superradiant growth rate of boson clouds with self-interactions around Kerr BHs and quantitatively evaluate how the self-interaction strength of scalar bosons affects the growth rate. We also assess the evolution of the BH's mass and spin. Our results reveal that, in addition to the superradiance-imposed upper bound on the boson cloud mass, self-interaction of ultralight bosons introduces a new, lower critical mass limit, beyond which the growth rate of the boson cloud approaches zero. This implies that the superradiance process terminates earlier when self-interaction is considered. Furthermore, we explore how self-interaction affects both the oscillation frequency of boson clouds in gravitational atoms and the frequency of gravitational wave (GW) emitted through cloud annihilation. The anticipated frequency shift might be detectable by the GW observatories. Given that self-interaction substantially alters the evolution of BH superradiance, its effects can significantly relax existing constraints on scalar bosons derived from superradiance. Taking the spin measurements from GW190412 and GW190517 as examples, we discuss the impact of self-interaction on constraint results in details.
Published version in Physical Review D
References in corpus (26)
- Discovering the QCD Axion with Black Holes and Gravitational Waves
- Instability of the massive Klein-Gordon field on the Kerr spacetime
- The TianQin project: current progress on science and technology
- Gravitational wave searches for ultralight bosons with LIGO and LISA
- Superradiant instabilities in astrophysical systems
- Stochastic and resolvable gravitational waves from ultralight bosons
- Bosenova collapse of axion cloud around a rotating black hole
- All-sky search for gravitational wave emission from scalar boson clouds around spinning black holes in LIGO O3 data
- Constraints on ultralight scalar bosons within black hole spin measurements from LIGO-Virgo's GWTC-2
- Sharp Signals of Boson Clouds in Black Hole Binary Inspirals
- Search for continuous gravitational wave emission from the Milky Way center in O3 LIGO--Virgo data
- SuperRad: Modeling the black hole superradiance gravitational waveform
- Termination of Superradiance from a Binary Companion
- Signatures of ultralight bosons in the orbital eccentricity of binary black holes
- Relativistic perturbation theory for black-hole boson clouds
- Impact of multiple modes on the evolution of self-interacting axion condensate around rotating black holes
- Clocking Out Superradiance Limits
- Searching for Ultra-light Bosons and Constraining Black Hole Spin Distributions with Stellar Tidal Disruption Events
- Superradiant clouds may be relevant for close compact object binaries
- Self-Interacting Gravitational Atoms in the Strong-Gravity Regime
- Self-Gravity Effects of Ultralight Boson Clouds Formed by Black Hole Superradiance
- Implication of nano-Hertz stochastic gravitational wave background on ultralight axion particles
- Imprints of ultralight axions on the gravitational wave and pulsar timing measurement
- Black Holes as Fermion Factories
- Gravitational waves from axions annihilation through quantum field theory
- Impact of the cosmic neutrino background on black hole superradiance