arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1102.5090astro-ph.CO
收藏

弱透镜科学、巡天与系统学

Weak Lensing Science, Surveys, and Systematics

Sudeep Das, Roland de Putter, Eric V. Linder, Reiko Nakajima

摘要:

弱引力透镜是宇宙学模型、暗能量和暗物质的重要研究内容之一,它为研究宇宙的膨胀历史和大尺度结构的生长历史提供了重要线索。考虑到广泛的物理影响增长-动力学暗能量,扩展引力,中微子质量和空间曲率-我们分析的宇宙学约束。同样,我们考虑了一系列系统的不确定性,在剪切测量,光度红移,和非线性功率谱,宇宙学参数提取的影响。我们还调查,并提供拟合公式,调查参数,如红移深度,星系数密度和天空面积的影响。最后,我们研究了不同的基准宇宙学的结果的鲁棒性。

英文摘要:

Weak gravitational lensing is one of the key probes of the cosmological model, dark energy, and dark matter, providing insight into both the cosmic expansion history and large scale structure growth history. Taking into account a broad spectrum of physics affecting growth - dynamical dark energy, extended gravity, neutrino masses, and spatial curvature - we analyze the cosmological constraints. Similarly we consider the effects of a range of systematic uncertainties, in shear measurement, photometric redshifts, and the nonlinear power spectrum, on cosmological parameter extraction. We also investigate, and provide fitting formulas for, the influence of survey parameters such as redshift depth, galaxy number densities, and sky area. Finally, we examine the robustness of results for different fiducial cosmologies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑