Astroparticle Physics

天体粒子物理学

• 批准号: CRC-2021-00467
• 负责人: Bozorgnia, Nassim
• 金额: $ 5.1万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Canada Research Chairs
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=750797
• 关键词: Astroparticle; Physics

Dark matter is an unidentified substance which makes up about 85% of the total matter content of the Universe. Discovering its nature is of utmost importance in our understanding of the cosmos. Although evidence for dark matter exists on various astrophysical and cosmological scales, the particle nature of dark matter still remains a mystery.Dr. Bozorgnia is a leading expert in the field of dark matter. Her research program aims to map the dark matter content in our Galaxy, and employ this map to unravel the particle nature of dark matter. A variety of experiments, ranging from underground detectors to space observatories are currently operating around the globe and searching for dark matter. Correct interpretation of their results requires an understanding of how dark matter is distributed in our Galaxy, yet this knowledge is currently lacking.We are living in an exciting era to search for dark matter. The recent data from the Gaia space observatory has revolutionized our understanding of the Milky Way, and can provide us with crucial information on the dark matter distribution. Furthermore, there have been many recent advances in high resolution cosmological simulations of galaxy formation, and they can now produce realistic galaxies. Dr. Bozorgnia's research will capitalize on the availability of these data in order to understand and probe the dark matter distribution in the Milky Way.Dr. Bozorgnia will use three specific approaches to extract the dark matter distribution in our Galaxy. In the first approach, she will use the results of high resolution cosmological simulations to extract the dark matter distribution from Milky Way-like galaxies. In the second approach, she will use new astronomical data, together with novel numerical techniques, to identify the changes in the position and velocity of stars due to their interaction with dark matter clumps. In the third approach, she will identify new ways to probe the dark matter distribution and interaction type with future directional dark matter detectors, which can measure the arrival direction of dark matter particles in our labs.The results of this research program will shed light on the distribution of dark matter in our Galaxy, its mass, and the way it interacts with ordinary matter. It will lead to an accurate interpretation of data from dark matter experiments, and will allow us to determine the particle physics properties of dark matter.

暗物质是一种未知物质，约占宇宙物质总量的85%。发现它的本质对于我们理解宇宙至关重要。尽管在各种天体物理和宇宙学尺度上都存在暗物质的证据，但暗物质的粒子性质仍然是一个谜。博佐尼亚是暗物质领域的领先专家。她的研究计划旨在绘制银河系中暗物质的含量图，并利用这张图来揭示暗物质的粒子性质。目前，从地下探测器到太空天文台的各种实验正在全球范围内进行，并寻找暗物质。正确解释他们的结果需要了解暗物质在我们银河系中的分布情况，但目前缺乏这方面的知识。我们正生活在一个寻找暗物质的激动人心的时代。盖亚太空天文台的最新数据彻底改变了我们对银河系的理解，并可以为我们提供有关暗物质分布的重要信息。此外，星系形成的高分辨率宇宙学模拟最近取得了许多进展，现在可以产生真实的星系。博佐尼亚博士的研究将利用这些数据的可用性来了解和探测银河系中的暗物质分布。 Bozorgnia 将使用三种特定方法来提取银河系中的暗物质分布。在第一种方法中，她将利用高分辨率宇宙学模拟的结果来提取类银河系中的暗物质分布。在第二种方法中，她将使用新的天文数据以及新颖的数值技术来识别恒星由于与暗物质团块相互作用而导致的位置和速度的变化。在第三种方法中，她将找到用未来的定向暗物质探测器探测暗物质分布和相互作用类型的新方法，这些探测器可以测量我们实验室中暗物质粒子的到达方向。该研究计划的结果将揭示我们银河系中暗物质的分布、其质量以及它与普通物质相互作用的方式。它将导致对暗物质实验数据的准确解释，并使我们能够确定暗物质的粒子物理特性。