Beyond lensing by the cosmological constant
نویسندگان
چکیده
منابع مشابه
Gravitational Lensing and Tests of the Cosmological Constant
The case for a flat Cold Dark Matter model with a positive cosmological constant Λ has been recently strongly advocated by some theoreticians. In this paper we give the observers point of view to the light of the most recent observations with a special emphasis on lensing tests. We confirm the apparent cosmic concordance for a flat Universe with ΩΛ close to 0.6 but we note that a low mass densi...
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The cosmological constant Λ affects gravitational lensing phenomena. Following a study of the equations of motion of the Schwarzschild-de Sitter metric in the weak deflection limit, the contribution of Λ to the observable angular positions of multiple images and to their amplification and time delay is computed. Due to Λ the unresolved images are slightly demagnified, the radius of the Einstein...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2017
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.95.023509