Ultralight scalars and resonances in black-hole physics

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Ultralight scalars and resonances in black-hole physics. / Fujita, Ryuichi; Cardoso, Vitor.

In: Physical Review D, Vol. 95, No. 4, 044016, 15.02.2017.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Fujita, R & Cardoso, V 2017, 'Ultralight scalars and resonances in black-hole physics', Physical Review D, vol. 95, no. 4, 044016. https://doi.org/10.1103/PhysRevD.95.044016

APA

Fujita, R., & Cardoso, V. (2017). Ultralight scalars and resonances in black-hole physics. Physical Review D, 95(4), [044016]. https://doi.org/10.1103/PhysRevD.95.044016

Vancouver

Fujita R, Cardoso V. Ultralight scalars and resonances in black-hole physics. Physical Review D. 2017 Feb 15;95(4). 044016. https://doi.org/10.1103/PhysRevD.95.044016

Author

Fujita, Ryuichi ; Cardoso, Vitor. / Ultralight scalars and resonances in black-hole physics. In: Physical Review D. 2017 ; Vol. 95, No. 4.

Bibtex

@article{e7ec02377f1d4475a6e0507a6dd8b57b,
title = "Ultralight scalars and resonances in black-hole physics",
abstract = "Ultralight degrees of freedom coupled to matter lead to resonances, which can be excited when the Compton wavelength of the field equals a dynamical scale in the problem. For binaries composed of a star orbiting a supermassive black hole, these resonances lead to a smoking-gun effect: a periastron distance which stalls, even in the presence of gravitational-wave dissipation. This effect, also called a floating orbit, occurs for generic equatorial but eccentric orbits, and we argue that finite-size effects are not enough to suppress it.",
keywords = "POST-NEWTONIAN EXPANSION, BRANS-DICKE THEORY, GRAVITATIONAL-WAVES, SPINNING PARTICLE, KERR SPACETIME, NONSPHERICAL INFALL, ADIABATIC EVOLUTION, INCLINED ORBITS, RADIATION, MOTION",
author = "Ryuichi Fujita and Vitor Cardoso",
year = "2017",
month = feb,
day = "15",
doi = "10.1103/PhysRevD.95.044016",
language = "English",
volume = "95",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "4",

}

RIS

TY - JOUR

T1 - Ultralight scalars and resonances in black-hole physics

AU - Fujita, Ryuichi

AU - Cardoso, Vitor

PY - 2017/2/15

Y1 - 2017/2/15

N2 - Ultralight degrees of freedom coupled to matter lead to resonances, which can be excited when the Compton wavelength of the field equals a dynamical scale in the problem. For binaries composed of a star orbiting a supermassive black hole, these resonances lead to a smoking-gun effect: a periastron distance which stalls, even in the presence of gravitational-wave dissipation. This effect, also called a floating orbit, occurs for generic equatorial but eccentric orbits, and we argue that finite-size effects are not enough to suppress it.

AB - Ultralight degrees of freedom coupled to matter lead to resonances, which can be excited when the Compton wavelength of the field equals a dynamical scale in the problem. For binaries composed of a star orbiting a supermassive black hole, these resonances lead to a smoking-gun effect: a periastron distance which stalls, even in the presence of gravitational-wave dissipation. This effect, also called a floating orbit, occurs for generic equatorial but eccentric orbits, and we argue that finite-size effects are not enough to suppress it.

KW - POST-NEWTONIAN EXPANSION

KW - BRANS-DICKE THEORY

KW - GRAVITATIONAL-WAVES

KW - SPINNING PARTICLE

KW - KERR SPACETIME

KW - NONSPHERICAL INFALL

KW - ADIABATIC EVOLUTION

KW - INCLINED ORBITS

KW - RADIATION

KW - MOTION

U2 - 10.1103/PhysRevD.95.044016

DO - 10.1103/PhysRevD.95.044016

M3 - Journal article

VL - 95

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 4

M1 - 044016

ER -

ID: 299402864