PACT. II. Pressure profiles of galaxy clusters using Planck and ACT

IF 27.8 1区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

The Astronomy and Astrophysics Review Pub Date : 2021-05-12 DOI:10.1051/0004-6361/202040213

E. Pointecouteau, I. Santiago-Bautista, M. Douspis, N. Aghanim, D. Crichton, J. Diego, G. Hurier, J. Macías-Pérez, T. Marriage, M. Remazeilles, C. Caretta, H. Bravo-Alfaro

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引用次数: 2

Abstract

The pressure of hot gas in groups and clusters of galaxies is a key physical quantity, which is directly linked to the total mass of the halo and several other thermodynamical properties. In the wake of previous observational works on the hot gas pressure distribution in massive halos, we have investigated a sample of 31 clusters detected in both the Planck and Atacama Cosmology Telescope (ACT), MBAC surveys. We made use of an optimised Sunyaev-Zeldovich (SZ) map reconstructed from the two data sets and tailored for the detection of the SZ e ﬀ ect, taking advantage of both Planck coverage of large scales and the ACT higher spatial resolution. Our average pressure proﬁle covers a radial range going from 0 . 04 × R 500 in the central parts to 2 . 5 × R 500 in the outskirts. In this way, it improves upon previous pressure-proﬁle reconstruction based on SZ measurements. It is compatible, as well as competitive, with constraints derived from joint X-ray and SZ analysis. This work demonstrates the possibilities o ﬀ ered by large sky surveys of the SZ e ﬀ ect with multiple experiments with di ﬀ erent spatial resolutions and spectral coverages, such as ACT and Planck .

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协议。2利用普朗克和ACT观测星系团的压力分布

星系群和星系团中热气体的压力是一个关键的物理量，它直接关系到光晕的总质量和其他几个热力学性质。在之前对大质量晕中热气体压力分布的观测工作之后，我们研究了在普朗克和阿塔卡马宇宙学望远镜(ACT) MBAC巡天中探测到的31个星团样本。我们利用了从两个数据集重建的优化的Sunyaev-Zeldovich (SZ)地图，并针对SZ效应的检测进行了定制，利用了普朗克大尺度覆盖和ACT更高的空间分辨率。我们的平均压力分布图涵盖了从0开始的径向范围。04 × r500在中心部位要2个。5 × R 500在郊区。通过这种方式，改进了以前基于SZ测量的压力剖面重建。它是兼容的，也是竞争的，从联合x射线和SZ分析得出的约束。这项工作证明了通过不同空间分辨率和光谱覆盖范围(如ACT和普朗克)的多个实验，对SZ效应进行大规模巡天所提供的可能性。

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

The Astronomy and Astrophysics Review 地学天文-天文与天体物理

CiteScore

45.00

自引率

0.80%

发文量

期刊介绍： The Astronomy and Astrophysics Review is a journal that covers all areas of astronomy and astrophysics. It includes subjects related to other fields such as laboratory or particle physics, cosmic ray physics, studies in the solar system, astrobiology, instrumentation, and computational and statistical methods with specific astronomical applications. The frequency of review articles depends on the level of activity in different areas. The journal focuses on publishing review articles that are scientifically rigorous and easily comprehensible. These articles serve as a valuable resource for scientists, students, researchers, and lecturers who want to explore new or unfamiliar fields. The journal is abstracted and indexed in various databases including the Astrophysics Data System (ADS), BFI List, CNKI, CNPIEC, Current Contents/Physical, Chemical and Earth Sciences, Dimensions, EBSCO Academic Search, EI Compendex, Japanese Science and Technology, and more.