AI 中文总结
研究利用SKAO巡天通过“$N\times2$点”分析预测宇宙学约束能力，结合多种信号，假设SKA-Mid AA4巡天，能对ΛCDM参数达约1%精度测量，还探索了动力学暗能量、中微子质量总和及背景曲率。
AI 中文摘要
平方公里阵列天文台（SKAO）巡天将通过氢原子21厘米星系和强度映射巡天以及射电连续谱巡天，为探索宇宙大尺度结构提供前所未有的窗口。我们给出了“$N\times2$点”分析对宇宙学的约束能力预测，该分析结合了星系聚类、星系弱引力透镜、星系-星系引力透镜信号和21厘米强度图。通过假设来自平方公里阵列中型望远镜AA4的宇宙学巡天，我们表明这样的$N\times2$点分析将能够对ΛCDM宇宙学参数进行精度约为1%的测量。我们还探索了$w_0, w_a$模型中的动力学暗能量、中微子质量总和$\rm M_\nu$以及背景曲率$\Omega_{\rm k}$。
英文摘要
SKAO surveys will provide an unprecedented window into the large-scale structure of the universe through HI 21cm galaxy and intensity mapping surveys, and radio continuum surveys. We present forecasts for the cosmological constraining power of ``$N\times2\mathrm{pt}$'' analyses -- which combine galaxy clustering, galaxy weak lensing, galaxy-galaxy lensing signals and 21cm Intensity Maps. By assuming cosmology surveys from an SKA-Mid AA4, we show that such an $N\times2\mathrm{pt}$ analysis will be able to deliver measurements of $\sim1\%$ precision on $Λ$CDM cosmological parameters. We also explore dynamical dark energy in the $w_0, w_a$ model, the sum of neutrino masses $\rm M_ν$, and the background curvature $Ω_{\rm k}$.
CommentsPublished in Advancing Astrophysics with the SKA II (AASKAII), 2026 (arXiv:2606.20366). Report-no:AASKAII/Harrison01. Advancing Astrophysics with the SKA II (AASKAII) outlines the transformative scientific advances that will be enabled by the SKA telescopes
