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- W2045842004 abstract "A static, spherically symmetric, asymptotically flat spacetime may allow for circular, closed null-geodesics which are said to belong to a photon sphere. In the context of gravitational lensing in the strong deflection regime, the presence of a photon sphere leads to an unbounded angle of deflection of light (multiple turns) and formation of relativistic images. In this paper, we show that photon spheres may form in some configurations of boson stars constructed with a free massive complex scalar field nonminimally coupled to gravity. Assuming that the boson star is transparent to light, photon spheres would give raise not only to phenomena in the realm of strong gravitational lensing, but also to considerably increased photon flux in the central region of the star, relative to the flux in its surroundings." @default.
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- W2045842004 date "2013-04-18" @default.
- W2045842004 modified "2023-09-23" @default.
- W2045842004 title "Formation of photon spheres in boson stars with a nonminimally coupled field" @default.
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- W2045842004 doi "https://doi.org/10.1088/0264-9381/30/9/095014" @default.
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