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http://hdl.handle.net/10773/18985
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DC Field | Value | Language |
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dc.contributor.author | Franchini, N. | pt |
dc.contributor.author | Pani, P. | pt |
dc.contributor.author | Maselli, A. | pt |
dc.contributor.author | Gualtieri, L. | pt |
dc.contributor.author | Herdeiro, C. A. R. | pt |
dc.contributor.author | Radu, E. | pt |
dc.contributor.author | Ferrari, V. | pt |
dc.date.accessioned | 2017-11-27T10:01:26Z | - |
dc.date.available | 2017-11-27T10:01:26Z | - |
dc.date.issued | 2017 | - |
dc.identifier.issn | 2470-0010 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/18985 | - |
dc.description.abstract | Light bosonic fields are ubiquitous in extensions of the Standard Model. Even when minimally coupled to gravity, these fields might evade the assumptions of the black-hole no-hair theorems and give rise to spinning black holes which can be drastically different from the Kerr metric. Furthermore, they allow for self-gravitating compact solitons, known as (scalar or Proca) boson stars. The quasiperiodic oscillations (QPOs) observed in the x-ray flux emitted by accreting compact objects carry information about the strong-field region, thus providing a powerful tool to constrain deviations from Kerr's geometry and to search for exotic compact objects. By using the relativistic precession model as a proxy to interpret the QPOs in terms of geodesic frequencies, we investigate how the QPO frequencies could be used to test the no-hair theorem and the existence of light bosonic fields near accreting compact objects. We show that a detection of two QPO triplets with current sensitivity can already constrain these models and that the future eXTP mission or a LOFT-like mission can set very stringent constraints on black holes with bosonic hair and on (scalar or Proca) boson stars. The peculiar geodesic structure of compact scalar/Proca boson stars implies that these objects can easily be ruled out as alternative models for x-ray source GRO J1655-40. | pt |
dc.language.iso | eng | pt |
dc.publisher | American Physical Society | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147206/PT | pt |
dc.relation | info:eu-repo/grantAgreement/EC/FP7/306425/EU | pt |
dc.relation | info:eu-repo/grantAgreement/EC/FP7/295189/EU | pt |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/690904/EU | pt |
dc.rights | openAccess | por |
dc.title | Constraining black holes with light boson hair and boson stars using epicyclic frequencies and quasiperiodic oscillations | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.issue | 12 | |
degois.publication.title | Physical Review D | pt |
degois.publication.volume | 95 | pt |
dc.identifier.doi | 10.1103/PhysRevD.95.124025 | pt |
Appears in Collections: | CIDMA - Artigos DFis - Artigos GGDG - Artigos |
Files in This Item:
File | Description | Size | Format | |
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PRD95(2017)124025.pdf | 1.07 MB | Adobe PDF | View/Open |
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