Collaborative research: Structure formation on small scales and the nature of dark matter

合作研究：小尺度结构形成和暗物质的性质

• 批准号: 0607712
• 负责人: Joel Primack
• 金额: $ 4.39万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0607712&HistoricalAwards=false
• 关键词: Collaborative; research; Structure; formation; small

Dr. Joel Primack at the University of California, Santa Cruz, will undertake a collaborative project, with Dr. Manoj Kaplinghat, at the University of California, Irvine, (0607746) and Dr. Anatoly Klypin at New Mexico State University (0607752), to use high-resolution N-body simulations to compare density profiles of dark matter halo and satellite abundance counts for the two best-motivated classes of dark matter from super-symmetry: Cold Dark Matter (CDM) and non-thermal Warm Dark Matter (ntWDM). Models predict that these two classes have identical large-scale structure but begin to differ on scales of million-par-second (~10E22 meter) or smaller. The team will make predictions for the density profiles of thermal and non-thermal WDM halos and determine the size and importance of the phase-space limited cores that must exist in these WDM halos. They will study structure formation at high redshifts and investigate the prospects for early reionization in WDM and CDM models.The results of the proposed work will be critical for testing the CDM paradigm with future data, and they will be made public. The broad education goals include fostering interest in physics among students through two programs at University of California, Irvine: Physics Roadshow, which takes physics demonstrations to elementary schools in the neighborhood, and COSMOS, which introduces highly motivated high school students to research in astronomy and astrophysics.

加利福尼亚大学圣克鲁斯分校的乔尔·普里马克（Joel Primack）将与加利福尼亚大学尔湾分校（0607746）的Manoj Kaplinghat博士和新墨西哥州立大学的Anatoly Klypin博士（0607752）（0607752）（0607752）（0607752）（0607752）（0607752）（0607752）（0607752），使用高分辨率的N-Body Diff tock and Inceart and sarl sarl sarl sarpeires countell and sarl sarl sarl sarl offorce n darkitife dook and，超级对称的深色物质最能动机的类别：冷暗物质（CDM）和非热量温暖的暗物质（NTWDM）。模型预测，这两个类别具有相同的大规模结构，但在百万秒（〜10E22米）或更小的尺度上开始有所不同。该团队将对热和非热WDM光晕的密度曲线进行预测，并确定这些WDM光晕中必须存在的相位空间有限核的大小和重要性。他们将研究高红移的结构形成，并研究WDM和CDM模型中早期电源的前景。拟议工作的结果对于使用未来数据测试CDM范式至关重要，并将公开。广泛的教育目标包括通过加利福尼亚大学尔湾分校的两个课程来促进学生对物理的兴趣：物理路演，该计划将物理示范带到附近的小学和Cosmos，并引入了高度动机的高中学生来研究天文学和天文学。