当前位置:
X-MOL 学术
›
Annu. Rev. Astron. Astrophys.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Weak Lensing for Precision Cosmology
Annual Review of Astronomy and Astrophysics ( IF 33.3 ) Pub Date : 2018-09-14 , DOI: 10.1146/annurev-astro-081817-051928 Rachel Mandelbaum 1
Annual Review of Astronomy and Astrophysics ( IF 33.3 ) Pub Date : 2018-09-14 , DOI: 10.1146/annurev-astro-081817-051928 Rachel Mandelbaum 1
Affiliation
Weak gravitational lensing, the deflection of light by mass, is one of the best tools to constrain the growth of cosmic structure with time and reveal the nature of dark energy. I discuss the sources of systematic uncertainty in weak lensing measurements and their theoretical interpretation, including our current understanding and other options for future improvement. These include long-standing concerns such as the estimation of coherent shears from galaxy images or redshift distributions of galaxies selected based on photometric redshifts, along with systematic uncertainties that have received less attention to date because they are subdominant contributors to the error budget in current surveys. I also discuss methods for automated systematics detection using survey data of the 2020s. The goal of this review is to describe the current state of the field and what must be done so that if weak lensing measurements lead toward surprising conclusions about key questions such as the nature of dark energy, those conclusions will be credible.
中文翻译:
精密宇宙学的弱透镜
弱引力透镜,即光的质量偏转,是限制宇宙结构随时间增长和揭示暗能量本质的最佳工具之一。我讨论了弱透镜测量中系统不确定性的来源及其理论解释,包括我们目前的理解和未来改进的其他选择。这些包括长期存在的问题,例如从星系图像估计相干切变或基于光度红移选择的星系的红移分布,以及迄今为止较少受到关注的系统不确定性,因为它们是当前调查中误差预算的次要贡献者. 我还讨论了使用 2020 年代的调查数据进行自动系统学检测的方法。
更新日期:2018-09-14
中文翻译:
精密宇宙学的弱透镜
弱引力透镜,即光的质量偏转,是限制宇宙结构随时间增长和揭示暗能量本质的最佳工具之一。我讨论了弱透镜测量中系统不确定性的来源及其理论解释,包括我们目前的理解和未来改进的其他选择。这些包括长期存在的问题,例如从星系图像估计相干切变或基于光度红移选择的星系的红移分布,以及迄今为止较少受到关注的系统不确定性,因为它们是当前调查中误差预算的次要贡献者. 我还讨论了使用 2020 年代的调查数据进行自动系统学检测的方法。