SO:UK - A major UK contribution to the Simons Observatory

SO:UK - 英国对西蒙斯天文台的重大贡献

• 批准号: ST/W002914/1
• 负责人: Michael Brown
• 金额: $ 263.51万
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FW002914%2F1
• 关键词: SO; UK; major; contribution; Simons

During the last three decades, measurements of the Cosmic Microwave Background (CMB) have been the driving force in establishing the standard cosmological model. UK scientists have played a pivotal role, particularly in recent times with major roles in ESA's Planck mission. These advances have been hugely important but the CMB's greatest contributions to fundamental physics could well be yet to come. The primary science goals of future CMB experiments include (i) the search for curl or ``B-mode" fluctuations on large angular scales in the CMB polarisation field, a tell-tale signature of primordial gravitational waves from inflation, (ii) to search for new light relic particles beyond the Standard Model through their imprint on the CMB fluctuations on small angular scales, (iii) to use measurements of the gravitational lensing and Sunyaev-Zel'dovich (SZ) effects in the CMB to constrain the sum of the neutrino masses and (iv) to help understand the observed accelerated expansion of the Universe using the low-redshift probes of CMB lensing and SZ measurements. The high sensitivity and high angular resolution of future experiments will also facilitate a wide range of additional frontier science ranging from studies of the reionisation era to searching for additional solar system objects. Simons Observatory (SO) is a US-led international project to construct a group of CMB telescopes in the Atacama Desert in northern Chile. It has been designed to address these new science challenges, and is due to begin operations in 2023. Here we propose a major UK contribution, composed of three main components. Firstly, we will establish a UK-based data centre, which will play a lead role in delivering the primary data products from all of the SO telescopes. Secondly, we will pursue a program of algorithm development work, forming a major contribution to the SO data pipeline software infrastructure. The third strand of our programme is the provision of a single ultra-high-frequency (UHF) optics tube for the SO Large Aperture Telescope.Delivering the data centre, and the algorithms and processing functions needed for the data pipeline, will address a critical need within the SO project and will position SO:UK scientists optimally for taking lead roles in the subsequent headline science exploitation of the SO data. The UK-based data centre will also help facilitate joint analyses (by the wider UK cosmology and astrophysics community) of the SO data in combination with data from other flagship UK astronomy projects, including the Euclid satellite, the Vera Rubin Observatory and the Square Kilometre Array. The SO:UK instrument includes the development and demonstration of key technologies including Kinetic Inductance Detectors (KIDs) and meta-material (MM) quasi-optical components. Demonstrating the compelling advantages of these UK-driven technologies as part of the leading CMB experiment of the 2020s will be a powerful argument for their adoption in future CMB projects (including the ground-based CMB-S4 experiment and a possible future ESA-led satellite mission) as well as in future projects in other high-profile areas of extra-Galactic astronomy and cosmology.

在过去的三十年中，宇宙微波背景（CMB）的测量已成为建立标准宇宙学模型的驱动力。英国科学家发挥了关键作用，尤其是最近在ESA的Planck任务中担任主要角色。这些进步非常重要，但是CMB对基本物理学的最大贡献尚未到来。未来CMB实验的主要科学目标包括（i）在CMB极化领域中搜索卷曲或``B模式''的cm型波动，这是通货膨胀中原始引力波的明显标志，（II），以通过对CMB范围的标准量表的范围搜索新的光颗粒，以搜索新的光颗粒，从而涉及CMB的标准量表，该标准尺度是II量表，该标准量表的范围是II（II smill Angie）。 CMB中的镜头和Sunyaev-Zel'Dovich（SZ）效应限制了中微子质量的总和，（iv），有助于了解观察到的宇宙的加速扩展，使用CMB镜头和SZ范围的较高的敏感性和较高的范围范围的范围。搜索其他太阳系对象（SO）是一个由美国领导的国际项目，旨在在智利北部的Atacama Desert构建一组CMB的望远镜。从所有SO望远镜中传递主要的数据产品。对于数据管道，将解决SO项目中的关键需求，并将其定位：英国科学家在随后的SO数据中最佳地发挥了主导作用，该数据中心将有助于促进联合分析（通过更广泛的英国宇宙学和天文学界）与其他SO的数据相结合，包括其他SO的数据。公里阵列。 ESA领导的卫星任务）以及其他备受瞩目的天文学和宇宙学领域的未来项目。

项目成果

Galactic Foreground Constraints on Primordial B-mode Detection for Ground-based Experiments

地基实验原始 B 模式探测的银河系前景约束

• DOI: 10.3847/1538-4357/ac3092
• 发表时间: 2022
• 期刊: The Astrophysical Journal
• 作者: Hervías-Caimapo, Carlos;Bonaldi, Anna;Brown, Michael L.;Huffenberger, Kevin M.
• 通讯作者: Huffenberger, Kevin M.

Fast map-based simulations of systematics in CMB surveys including effects of the scanning strategy

CMB 调查中基于地图的系统学快速模拟，包括扫描策略的影响

• DOI: 10.1093/mnras/stac561
• 发表时间: 2022
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: McCallum N

CMB Polarisation Signal Demodulation with a Rotating Half-Wave Plate

使用旋转半波片解调 CMB 偏振信号

• DOI: 10.48550/arxiv.2307.01860
• 发表时间: 2023
• 作者: Rashid M

The Simons Observatory: pipeline comparison and validation for large-scale B-modes

西蒙斯天文台：大规模 B 模式的管道比较和验证

• DOI: 10.48550/arxiv.2302.04276
• 发表时间: 2023
• 期刊: arXiv e-prints
• 作者: Wolz K.