Detection of scalar fields by extreme mass ratio inspirals with a Kerr black hole (2022)
- Authors:
- Autor USP: QIAN, WEILIANG - EEL
- Unidade: EEL
- DOI: 10.1103/PhysRevD.106.024047
- Subjects: COSMOLOGIA; GRAVIDADE; ONDAS GRAVITACIONAIS
- Agências de fomento:
- Language: Inglês
- Abstract: We study extreme mass ratio inspirals occurring in modified gravity, for which the system is modeled by a small compact object with scalar charge spiraling into a supermassive Kerr black hole. Besides the tensorial gravitational waves arising from the metric perturbations, radiation is also induced by the scalar field. The relevant metric and scalar perturbations are triggered by the orbital motion of the small object, which give rise to a system of inhomogeneous differential equations under the adiabatic approximation. Such a system of equations is then solved numerically using a Green’s function furnished by the solutions of the corresponding homogeneous equations. To explore the present scenario from an observational perspective, we investigate how the pertinent observables are dependent on specific spacetime configurations. In this regard, the energy fluxes and the gravitational-wave dephasing accumulated during the process are evaluated, as functions of the scalar charge, mass ratio, and spin of the central supermassive black hole. In particular, the presence of additional scalar emission leads to a more significant rate of overall energy loss which, in turn, decreases the total number of orbital cycles before the small object plunges into the central black hole. Moreover, for a central black hole with a higher spin, the imprints of the scalar charge on the resultant gravitational radiation are found to be more significant, which indicates the possibility of detecting the scalar charge.
- Imprenta:
- Source:
- Título do periódico: Physical review D
- ISSN: 24700010
- Volume/Número/Paginação/Ano: v.106, p.024047-, 2022
- Este periódico é de assinatura
- Este artigo é de acesso aberto
- URL de acesso aberto
- Cor do Acesso Aberto: green
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ABNT
GUO, Hong et al. Detection of scalar fields by extreme mass ratio inspirals with a Kerr black hole. Physical review D, v. 106, p. 024047-, 2022Tradução . . Disponível em: https://doi.org/10.1103/PhysRevD.106.024047. Acesso em: 11 maio 2024. -
APA
Guo, H., Liu, Y., Zhang, C., Gong, Y., Qian, W. -L., & Yue, R. -H. (2022). Detection of scalar fields by extreme mass ratio inspirals with a Kerr black hole. Physical review D, 106, 024047-. doi:10.1103/PhysRevD.106.024047 -
NLM
Guo H, Liu Y, Zhang C, Gong Y, Qian W-L, Yue R-H. Detection of scalar fields by extreme mass ratio inspirals with a Kerr black hole [Internet]. Physical review D. 2022 ;106 024047-.[citado 2024 maio 11 ] Available from: https://doi.org/10.1103/PhysRevD.106.024047 -
Vancouver
Guo H, Liu Y, Zhang C, Gong Y, Qian W-L, Yue R-H. Detection of scalar fields by extreme mass ratio inspirals with a Kerr black hole [Internet]. Physical review D. 2022 ;106 024047-.[citado 2024 maio 11 ] Available from: https://doi.org/10.1103/PhysRevD.106.024047 - Onset of chaotic gravitational lensing in non-Kerr rotating black holes with quadrupole mass moment
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Informações sobre o DOI: 10.1103/PhysRevD.106.024047 (Fonte: oaDOI API)
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