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.

暗物质是一种未知的物质，占宇宙总物质含量的85%左右。发现它的本质对我们理解宇宙至关重要。尽管暗物质存在于各种天体物理学和宇宙学尺度上，但暗物质的粒子性质仍然是一个谜。Bozorgnia博士是暗物质领域的领先专家。她的研究计划旨在绘制我们银河系中的暗物质内容，并利用这张地图来解开暗物质的粒子性质。从地下探测器到太空观测站，各种各样的实验目前正在地球仪周围运行，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。我们生活在一个令人兴奋的时代，寻找暗物质。最近来自盖亚空间天文台的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关键信息。此外，最近在星系形成的高分辨率宇宙学模拟方面取得了许多进展，它们现在可以产生真实的星系。Bozorgnia博士的研究将利用这些数据的可用性，以了解和探测银河系中的暗物质分布。Bozorgnia博士将使用三种特定的方法来提取银河系中的暗物质分布。在第一种方法中，她将使用高分辨率宇宙学模拟的结果来提取类银河系星系中的暗物质分布。在第二种方法中，她将使用新的天文数据，以及新的数值技术，来确定由于与暗物质团块的相互作用而导致的恒星位置和速度的变化。在第三种方法中，她将确定新的方法来探测暗物质的分布和相互作用类型，未来的定向暗物质探测器可以测量暗物质粒子在我们实验室中的到达方向，这项研究计划的结果将揭示我们银河系中暗物质的分布，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。