AI 中文总结
研究利用引力波聚类减轻星系系统误差，聚焦影响未来星系巡天对本地原初非高斯性约束的系统误差，通过三代天文台探测的引力波事件目录减少系统误差，还发布增强定制水平的新版Multi_CLASS代码。
AI 中文摘要
尽管目前宇宙学超大尺度的约束较差，但有望对广义相对论、ΛCDM内容和早期宇宙进行严格检验。在此尺度下，宇宙涨落限制灵敏度，控制系统误差很关键。多示踪分析可限制宇宙涨落影响并减轻系统误差。引力波可能是大尺度结构的理想示踪剂。本文给出引力波聚类减轻系统误差及助力发现新物理特征的具体例子。聚焦影响未来星系巡天对本地原初非高斯性约束能力的系统误差，展示三代天文台探测的引力波事件目录能减少系统误差影响并保持统计分析灵活性。还发布新版Multi_CLASS代码，增强了对不同示踪剂的定制水平且与CLASS最新版本兼容。
英文摘要
Although currently poorly constrained, cosmological ultra-large scales are expected to provide formidable tests not only of General Relativity, but also of the content of $Λ$CDM and the Early Universe. However, in this regime, cosmic variance plays a major role in limiting sensitivity, and controlling systematic errors becomes a crucial aspect in preserving the limited information content of current and future observations. Multi-tracer analyses represent a useful technique that simultaneously allows to limit the impact of cosmic variance and mitigate the presence of systematics. In this sense, gravitational waves might represent the perfect alternative tracer of the large-scale structure, since their detection suffers from a set of uncertainties completely different from that of traditional large-scale structure surveys. In this work, we provide a concrete example of how gravitational wave clustering mitigates the presence of systematics, and facilitate the discovery of New Physics signatures. Specifically, we focus on systematics that degrade the constraining power on local Primordial non-Gaussianity for future galaxy surveys; and show how catalogs of gravitational wave events detected by third-generation observatories reduce the impact of systematics while being able to maintain flexibility in the statistical analysis. Additionally, we release a new version of the Multi_CLASS code, which now provides an enhanced level of customization of the different tracers and is compatible with the latest releases of CLASS.
Comments28 pages, 8 figures
