Exploring the origin and fate of the universe with radio and millimeter-wave instrumentation and observations

通过无线电和毫米波仪器和观测探索宇宙的起源和命运

• 批准号: RGPIN-2019-05910
• 负责人: Dobbs, Matt
• 金额: $ 6.92万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=738587
• 关键词: Exploring; origin; fate; universe; radio

The primary focus of my research program is to shed light on the origin, fate, and composition of the universe through end-to-end direct astrophysical measurements. New instruments have been enabled by key technology developed by my group, opening new observational windows on some of the most exciting cosmic epochs. Group members have been key authors for important cosmology results with these instruments. My team co-developed and co-built the Canadian Hydrogen Intensity Mapping Experiment (CHIME), a novel new radio telescope that saw first light in Fall 2017. We have been at the core of the CHIME instrument design and realization, taking responsibility for the GHz digitizers and FPGA-based correlator and guiding the overall project. World leading cosmology and Fast Radio Burst science will be produced with CHIME this grant period. The other primary axis of my research is cosmic microwave background (CMB) polarization instrumentation and analysis. With the new South Pole Telescope 3g (SPT3g) receiver, constructed with cryogenic readout technology developed and built by my team, we will reach map depths that allow us to accurately characterize the small angular scale B-mode power spectrum polarization signal. We are developing our instrumentation for satellite platforms, focusing on the Japanese-led LiteBIRD CMB polarimeter. I am the Principle Investigator for two contracts we recently received from the Canadian Space Agency to develop, plan and cost the Canadian contribution to LiteBIRD. The ambitious research goals for this five year grant period are: (1)Pioneer the analysis techniques and calibration strategies to use CHIME      a) for the best measurement of Baryon Acoustic Oscillations available at redshift 1 to 2.5, placing new constraints on Dark Energy, and      b) to provide the largest sample of Fast Radio Bursts, cataloging them with a known, uniform selection. To achieve this, my team will develop the correlator instrumentation techniques, calibration, observing strategy and data analysis for cylindrical digital radio telescopes. (2)Develop our team's digital readout technology, already deployed on SPT3g, for space, enabling the LiteBIRD satellite CMB polarimeter. Analyze new polarization data from SPT3g. (3)Develop instrumentation for new generation radio telescope stations that will allow precise localization of the FRBs. My group has earned an international reputation for driving advances in instrumentation that enable new cosmology measurements. The team includes astronomers, physicists and engineers. It derives part of its strength from racial, social, and gender diversity of team members. We collaborate frequently with industrial partners and spin-off technology has been used by many researchers internationally.

我的研究计划的主要重点是通过端到端的直接天体物理测量来阐明宇宙的起源、命运和组成。我的团队开发的关键技术使新仪器成为可能，为一些最激动人心的宇宙时代打开了新的观测窗口。小组成员一直是这些仪器重要宇宙学结果的主要作者。我的团队共同开发并共同建造了加拿大氢强度测绘实验（CHIME），这是一种新颖的新型射电望远镜，于2017年秋季首次亮相。我们一直处于CHIME仪器设计和实现的核心，负责GHz数字转换器和基于fpga的相关器，并指导整个项目。世界领先的宇宙学和快速射电暴科学将与CHIME在此资助期间产生。我研究的另一个主轴是宇宙微波背景（CMB）极化仪器和分析。利用新的南极望远镜3g （SPT3g）接收器，采用我的团队开发和建造的低温读出技术，我们将达到地图深度，使我们能够准确表征小角尺度b模功率谱极化信号。我们正在为卫星平台开发我们的仪器，重点是日本领导的LiteBIRD CMB偏振计。我是我们最近从加拿大航天局收到的两份合同的主要调查员，以开发，计划和花费加拿大对LiteBIRD的贡献。这个五年资助期的雄心勃勃的研究目标是：(1)使用CHIME的分析技术和校准策略的先驱；a)在红移1到2.5之间进行重子声学振荡的最佳测量，对暗能量施加新的限制；b)提供最大的快速射电暴样本，用已知的统一选择对它们进行编目。为了实现这一目标，我的团队将开发圆柱数字射电望远镜的相关仪器技术、校准、观测策略和数据分析。(2)开发我们团队的数字读数技术，该技术已经部署在spt3上，用于太空，使LiteBIRD卫星CMB偏振仪成为可能。分析SPT3g的新极化数据。(3)为新一代射电望远镜台站开发能够精确定位快速射电暴的仪器。我的团队在推动仪器的进步方面赢得了国际声誉，这些仪器使新的宇宙学测量成为可能。这个团队包括天文学家、物理学家和工程师。它的部分力量来自于团队成员的种族、社会和性别多样性。我们经常与工业伙伴合作，衍生技术已被许多国际研究人员使用。