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Ultralight scalars and resonances in black-hole physics
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 d...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
2016
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.95.044016 http://cds.cern.ch/record/2253213 |
| _version_ | 1780953639355940864 |
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| author | Fujita, Ryuichi Cardoso, Vitor |
| author_facet | Fujita, Ryuichi Cardoso, Vitor |
| author_sort | Fujita, Ryuichi |
| collection | CERN |
| description | 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. |
| id | oai-inspirehep.net-1501664 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2016 |
| record_format | invenio |
| spelling | oai-inspirehep.net-15016642023-03-14T20:15:00Zdoi:10.1103/PhysRevD.95.044016http://cds.cern.ch/record/2253213engFujita, RyuichiCardoso, VitorUltralight scalars and resonances in black-hole physicsgr-qcGeneral Relativity and CosmologyUltralight 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.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 {\it stalls}, even in the presence of gravitational-wave dissipation. This effect, also called a {\it floating orbit}, occurs for generic equatorial but eccentric orbits and we argue that finite-size effects are not enough to suppress it.arXiv:1612.00978oai:inspirehep.net:15016642016-12-03 |
| spellingShingle | gr-qc General Relativity and Cosmology Fujita, Ryuichi Cardoso, Vitor Ultralight scalars and resonances in black-hole physics |
| title | Ultralight scalars and resonances in black-hole physics |
| title_full | Ultralight scalars and resonances in black-hole physics |
| title_fullStr | Ultralight scalars and resonances in black-hole physics |
| title_full_unstemmed | Ultralight scalars and resonances in black-hole physics |
| title_short | Ultralight scalars and resonances in black-hole physics |
| title_sort | ultralight scalars and resonances in black-hole physics |
| topic | gr-qc General Relativity and Cosmology |
| url | https://dx.doi.org/10.1103/PhysRevD.95.044016 http://cds.cern.ch/record/2253213 |
| work_keys_str_mv | AT fujitaryuichi ultralightscalarsandresonancesinblackholephysics AT cardosovitor ultralightscalarsandresonancesinblackholephysics |