Peaks in weak lensing mass maps for cluster astrophysics and cosmology.

IF 4.4 3区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences Pub Date : 2025-01-01 DOI:10.2183/pjab.101.010

Masamune Oguri, Satoshi Miyazaki

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Abstract

Clusters of galaxies can be identified from the peaks in weak lensing aperture mass maps constructed from weak lensing shear catalogs. Such purely gravitational cluster selection differs considerably from traditional cluster selection based on the baryonic properties of clusters. In this review, we present the basics and applications of weak lensing shear-selected cluster samples. Detailed studies of the baryonic properties of shear-selected clusters shed new light on cluster astrophysics. The purely gravitational selection indicates that the selection function can be quantified more easily and robustly, which is crucial for deriving accurate cosmological constraints from the abundance of shear-selected clusters. Recent advances in shear-selected cluster studies are driven by the Subaru Hyper Suprime-Cam survey, in which more than 300 shear-selected clusters with a signal-to-noise ratio ＞ 5 were identified. It is argued that various systematic effects in cosmological analysis can be mitigated by carefully selecting the setup of the analysis, including the selection of kernel functions and the source galaxy sample.

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星系团天体物理学和宇宙学中弱透镜质量图的峰值。

从弱透镜剪切表构建的弱透镜孔径质量图的峰可以识别星系团。这种纯引力的星团选择与基于星团重子性质的传统星团选择有很大的不同。本文综述了弱透镜剪切选择聚类样本的基本原理及其应用。对剪切选择星团重子性质的详细研究为星团天体物理学提供了新的思路。纯引力选择表明选择函数可以更容易和稳健地量化，这对于从剪切选择星团的丰度中获得精确的宇宙学约束至关重要。剪切选择簇研究的最新进展是由Subaru Hyper prime- cam调查推动的，其中确定了300多个剪切选择簇，信噪比为bb50。本文认为，通过仔细选择分析的设置，包括核函数的选择和源星系样本的选择，可以减轻宇宙学分析中的各种系统效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the Japan Academy. Series B, Physical and Biological Sciences 生物-综合性期刊

CiteScore

6.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Proceedings of the Japan Academy Ser. B (PJA-B) is a scientific publication of the Japan Academy with a 90-year history, and covers all branches of natural sciences, except for mathematics, which is covered by the PJA-A. It is published ten times a year and is distributed widely throughout the world and can be read and obtained free of charge through the world wide web.