Growth of accretion driven scalar hair around Kerr black holes
Journal Article
·
· Physical Review. D.
- Univ. of Oxford (United Kingdom); OSTI
- Univ. of Oxford (United Kingdom)
- Columbia Univ., New York, NY (United States)
We report that Scalar fields around compact objects are of interest for scalar-tensor theories of gravity and dark matter models consisting of a massive scalar, e.g., axions. We study the behavior of a scalar field around a Kerr black hole with nontrivial asymptotic boundary conditions - both nonzero density and nonzero angular momentum. Starting from an initial radially homogeneous configuration, a scalar cloud is accreted, which asymptotes to known stationary configurations over time. We study the cloud growth for different parameters including black hole spin, scalar field mass, and the scalar field density and angular momentum far from the black hole. We characterize the transient growth of the mass and angular momentum in the cloud, and the spatial profile of the scalar around the black hole, and relate the results of fully nonlinear simulations to an analytic perturbative expansion. We also highlight the potential for these accreted clouds to create monochromatic gravitational wave signals - similar to the signals from superradiant clouds, although significantly weaker in amplitude.
- Research Organization:
- Columbia Univ., New York, NY (United States); Univ. of Oxford (United Kingdom)
- Sponsoring Organization:
- European Research Council (ERC); Kavli Foundation; Partnership for Advanced Computing in Europe; Science and Technology Facilities Council (STFC); Simons Fellowship; USDOE Office of Science (SC); Univ. of Columbia
- Grant/Contract Number:
- SC0011941
- OSTI ID:
- 1851581
- Journal Information:
- Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 4 Vol. 103; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Dynamical friction from scalar dark matter in the relativistic regime
Black hole accretion discs and screened scalar hair
Black hole superradiance with dark matter accretion
Journal Article
·
Mon Nov 08 19:00:00 EST 2021
· Physical Review. D.
·
OSTI ID:1979950
Black hole accretion discs and screened scalar hair
Journal Article
·
Sat Oct 01 00:00:00 EDT 2016
· Journal of Cosmology and Astroparticle Physics
·
OSTI ID:22679431
Black hole superradiance with dark matter accretion
Journal Article
·
Sun May 07 20:00:00 EDT 2023
· Physical Review. D.
·
OSTI ID:2419882
Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
astronomical black holes
astrophysical studies of gravity
classical black holes
general relativity
general relativity equations
gravitational wave detection
gravitational wave sources
gravitational waves
massive compact halo objects
numerical relativity
particle dark matter
solutions
stars
GENERAL PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
astronomical black holes
astrophysical studies of gravity
classical black holes
general relativity
general relativity equations
gravitational wave detection
gravitational wave sources
gravitational waves
massive compact halo objects
numerical relativity
particle dark matter
solutions
stars