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arXiv · astro-ph/9506102

Gravitational Lensing and Anisotropies of CBR on the Small Angular Scales

J. M. Liu·J. G. Gao
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Abstract

We investigate the effect of gravitational lensing, produced by linear density perturbations, for anisotropies of the Cosmic Background Radiation (CBR) on scales of arcminutes. In calculations, a flat universe ($Ω=1$) and the Harrison-Zel'dovich spectrum ($n=1$) are assumed. The numerical results show that on scales of a few arcminutes, gravitational lensing produces only negligible anisotropies in the temperature of the CBR. Our conclusion disagrees with that of Cayón {\it et al.} who argue that the amplification of $ΔT/T$ on scales $\le 3'$ may even be larger than 100\%.

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J. M. Liu, J. G. Gao. 1995-06-20. Gravitational Lensing and Anisotropies of CBR on the Small Angular Scales. https://doi.org/10.1093/mnras%2F277.1.152

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