Towards the First HSC-SSP Cluster Cosmology Results: Focus on Robustness against Projection Effects

迈向第一个 HSC-SSP 星团宇宙学结果：关注投影效应的鲁棒性

• 批准号: 21K13917
• 负责人: PARK YOUNGSOO
• 金额: $ 2.66万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Early-Career Scientists
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-01 至 2023-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21K13917/
• 关键词: Cosmology; galaxy clusters; weak lensing; large scale structure; Galaxy Clusters; Weak Lensing; Large Scale Structure

In FY2022 (May 2022 to September 2022), I have carried out follow-up research related to the results obtained inFY2021. Specifically, my collaborators and I have obtained a new cluster lensing measurement from the HSC-SSPfirst-year data. I have then performed preliminary comparisons between the FY2021 results, using SDSS shapemeasurements, and new results using the HSC-SSP shape measurements. Preliminary results suggest that thepuzzles from FY2021 may be solved with the new cluster lensing measurements, and further studies and analysesare ongoing today.I have also refactored the codebase for the cluster cosmology analysis pipeline and have shared it with mycollaborators as a private github repository. This refactoring has made it easy for current and future researchersinterested in contributing to quickly learn and become able to perform the analysis, in particular the running of MarkovChain Monte Carlo simulations for likelihood analyses.Both of the above achievements will allow the impact of this grant to last long after its end.

于2022财政年度（2022年5月至2022年9月），本人已就2021财政年度所得结果进行跟进研究。具体来说，我和我的合作者从HSC-SSP第一年的数据中获得了一个新的集群透镜测量。然后，我对使用SDSS形状测量的2021财年结果和使用HSC-SSP形状测量的新结果进行了初步比较。初步结果表明，2021财年的难题可能会通过新的星团透镜测量来解决，今天正在进行进一步的研究和分析。我还重构了星团宇宙学分析管道的代码库，并将其作为私人github存储库与我的合作者分享。这种重构使得当前和未来有兴趣做出贡献的研究人员能够快速学习并能够执行分析，特别是运行马尔可夫链蒙特卡罗模拟进行可能性分析。上述两项成就将使该资助的影响在结束后持续很长时间。