Structure and dynamics of galaxies and their dark matter halos

星系及其暗物质晕的结构和动力学

• 批准号: 138134-2008
• 负责人: Widrow, Lawrence
• 金额: $ 2.86万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=422234
• 关键词: Structure; dynamics; galaxies; their; dark

My research activities will focus on two interrelated areas: galactic astronomy and the nature of dark matter. Beautiful, majestic, and remarkably diverse, galaxies occupy a special place in astronomical lore. While many galaxies appear to be isolated and quiescent, they are continually evolving, forming bars and spiral arms, swallowing up satellite galaxies, and merging with one another. My collaborators, thesis students, and I are building idealized models of disk galaxies to study these complicated processes. We fit observational data for actual galaxies by tuning the parameters of the model and study their evolution using numerical simulations. We have built a suite of models for our galaxy, the Milky Way, and found that they develop bars and spiral structure similar to what is seen in nature. In the future, we will incorporate gaseous disks and globular clusters into the model. We will also study galaxy-galaxy interactions.

我的研究活动将集中在两个相互关联的领域：银河天文学和暗物质的本质。 美丽、雄伟且极其多样化的星系在天文学中占有特殊的地位。 虽然许多星系看似孤立且静止，但它们却在不断演化，形成条状星系和旋臂，吞噬卫星星系，并相互融合。 我和我的合作者、论文学生正在构建理想化的盘状星系模型来研究这些复杂的过程。 我们通过调整模型参数来拟合实际星系的观测数据，并使用数值模拟研究它们的演化。 我们为我们的星系（银河系）建立了一套模型，发现它们具有与自然界中所见类似的条状和螺旋结构。 未来，我们将把气态盘和球状星团纳入模型中。 我们还将研究星系与星系的相互作用。