GRAVITATIONAL LENSING AND THE COSMIC MICROWAVE BACKGROUND

被引：30

作者：

CAYON, L ^{[1
]}

MARTINEZGONZALEZ, E ^{[1
]}

SANZ, JL ^{[1
]}

机构：

[1] UNIV CANTABRIA,CSIC,INST ESTUDIOS AVANZADOS FIS MODERNA & BIOL MOLEC,E-39005 SANTANDER,SPAIN

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 403卷 / 02期

关键词：

COSMIC MICROWAVE BACKGROUND; GRAVITATIONAL LENSING;

D O I：

10.1086/172218

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present calculations of the effect of the gravitational lensing of the cosmic microwave photons, produced by linear density perturbations, on the anisotropies of the cosmic microwave background for several popular cosmological scenarios. The result is an appreciable amplification of the order of 20% for DELTAT/T in present experiments of several arcminute scales, whereas previous work dealing with nonlinear density fluctuations find a negligible amplification. On smaller scales of a few arcminutes (< 3') the amplification can be even higher than 100% for the same scenarios.

引用

页码：471 / 475

页数：5

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