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dc.contributor.authorCao, Zhengpt
dc.contributor.authorCárdenas-Avendaño, Alejandropt
dc.contributor.authorZhou, Mengleipt
dc.contributor.authorBambi, Cosimopt
dc.contributor.authorHerdeiro, Carlos A.
dc.contributor.authorRadu, Eugenpt
dc.description.abstractThe present paper is a sequel to our previous work [1] in which we studied the iron Kα line expected in the reflection spectrum of Kerr black holes with scalar hair. These metrics are solutions of Einstein's gravity minimally coupled to a massive, complex scalar field. They form a continuous bridge between a subset of Kerr black holes and a family of rotating boson stars depending on one extra parameter, the dimensionless scalar hair parameter q, ranging from 0 (Kerr black holes) to 1 (boson stars). Here we study the limiting case q = 1, corresponding to rotating boson stars. For comparison, spherical boson stars are also considered. We simulate observations with XIS/Suzaku. Using the fact that current observations are well fit by the Kerr solution and thus requiring that acceptable alternative compact objects must be compatible with a Kerr fit, we find that some boson star solutions are relatively easy to rule out as potential candidates to explain astrophysical black holes, while other solutions, which are neither too dilute nor too compact are more elusive and we argue that they cannot be distinguished from Kerr black holes by the analysis of the iron line with current X-ray
dc.publisherIOP Publishingpt
dc.relationNSFC - 11305038pt
dc.relationNSFC - U1531117pt
dc.relationFundación Universitaria Konrad Lorenz - project 5INV1161pt
dc.relationNSF - PHY-1250636pt
dc.relationH2020-MSCA-RISE-2015 - Grant No. StronGrHEP-690904pt
dc.relationFCT/CIDMA - UID/MAT/04106/2013pt
dc.subjectAstrophysical black holespt
dc.titleIron Kα line of boson starspt
degois.publication.titleJournal of Cosmology and Astroparticle Physicspt
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