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Predictions for Strong-lens Detections with the Nancy Grace Roman Space Telescope
Research Notes of the AAS Pub Date : 2020-10-28 , DOI: 10.3847/2515-5172/abc4ea
Charles Weiner , Stephen Serjeant , Chris Sedgwick

Strong gravitational lensing is an ideal tool for mapping the distribution of dark matter and for testing the values of cosmological parameters. Forthcoming surveys such as Euclid and the Rubin Observatory Large Synoptic Telescope Survey should increase the number of known strong lensing systems significantly, with for example over 100,000 such systems predicted in the Euclid wide survey. In this short research note we predict that approximately 17,000 strong gravitational lenses will also be detectable in the Nancy Grace Roman Space Telescope 2000 square degree survey, using the LensPop gravitational lensing model. We present predicted distributions in source and deflector redshifts, magnitudes, and magnifications. Although this survey is not primarily designed as a strong lensing detection experiment, it will still provide a large complementary catalog to shallower, wider-area forthcoming lensing discovery projects.

中文翻译:

南希·格雷斯(Nancy Grace)罗马太空望远镜对强镜头探测的预测

强引力透镜是绘制暗物质分布和测试宇宙学参数值的理想工具。即将到来的诸如Euclid和Rubin天文台大型天气望远镜调查之类的调查将显着增加已知的强透镜系统的数量,例如,在Euclid范围的调查中预计将有超过100,000个这样的系统。在这份简短的研究报告中,我们预测,使用LensPop引力透镜模型,在Nancy Grace Roman太空望远镜2000平方度调查中,还将可以检测到大约17,000个强引力透镜。我们介绍了源和偏转器的红移,幅度和放大率的预测分布。尽管此调查并非主要是为了进行强力镜头检测实验而设计的,
更新日期:2020-10-30
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