The Dark Matter Halo Finder

暗物质晕探测器

• 批准号: 2307790
• 负责人: Jeremy Tinker
• 金额: $ 43.81万
• 依托单位: New York University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-09-01 至 2026-08-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2307790&HistoricalAwards=false
• 关键词: Dark; Matter; Halo; Finder

The galaxies we see in the sky are only a small part of the material that makes up the universe. The vast majority of matter is “dark matter,” and each galaxy forms, lives, and dies in a massive clump of dark matter. Thus, the dark matter must have a profound influence on creating the diverse population of galaxies that we see today. Since dark matter isn’t directly observable, understanding this influence requires new methods to indirectly measure the connection between the dark matter and the galaxies that we see. Scientists at New York University will develop a new statistical method for quantifying this relationship and will apply it to data from the Bright Galaxy Survey of the Dark Energy Spectroscopic Instrument (DESI). As part of this project, the PI will advise undergraduate students in research and will incorporate results from this research into undergraduate coursework.The technique in this proposal is to use a galaxy group finder that assumes that all groups live in a common dark matter halo, and that the population of dark halos is well-predicted by numerical simulations of structure formation. The properties and formation histories of halos is imparted on their spatial distribution, thus it is possible to map the observed properties of galaxies back onto the unobservable properties of dark matter halos in an iterative process, converging on a correlation matrix between halo properties and galaxy properties. This project will use new data from the DESI Bright Galaxy Survey, nearly a factor of ten larger than the SDSS spectroscopic catalog, to break new ground in our understanding of the influence of the dark sector on galaxy formation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

我们在宇宙的材料市场中看到的绝大多数是“暗物质”。衡量暗物质和星系之间的连接。作为该项目的一部分，Pi Willgraduit学生在研究中将研究的结果纳入地下课程工作。该提案中的技术是用作Galaxy Pfinder黑暗光环的数量模拟是对结构形成的数值模拟。 HALO性质和星系性能是DESI BRIGHT GALAXY调查的新数据。 Roader影响审查标准。