| 研究課題/領域番号 |
21K13917
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| 研究種目 |
若手研究
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| 配分区分 | 基金 |
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| 審査区分 |
小区分15010:素粒子、原子核、宇宙線および宇宙物理に関連する理論
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| 研究機関 | 東京大学 |
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研究代表者 |
PARK YOUNGSOO 東京大学, カブリ数物連携宇宙研究機構, 特任研究員 (20835467)
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| 研究期間 (年度) |
2021-04-01 – 2023-03-31
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| 研究課題ステータス |
中途終了 (2022年度)
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| 配分額 *注記 |
4,160千円 (直接経費: 3,200千円、間接経費: 960千円)
2023年度: 1,170千円 (直接経費: 900千円、間接経費: 270千円)
2022年度: 1,950千円 (直接経費: 1,500千円、間接経費: 450千円)
2021年度: 1,040千円 (直接経費: 800千円、間接経費: 240千円)
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| キーワード | Cosmology / galaxy clusters / weak lensing / large scale structure / Galaxy Clusters / Weak Lensing / Large Scale Structure |
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| 研究開始時の研究の概要 |
Cluster cosmology analyses hinge on accurate calibrations of cluster masses. This research aims to tackle the issue of projection effects, a key set of systematic effects complicating the mass calibration of optical clusters, and thereby create a viable path forward for robust cluster cosmology, more specifically by creating models of projection effects, constructing and testing an end-to-end analysis pipeline including these models, and applying these pipelines to real data.
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| 研究実績の概要 |
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.
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