Galaxy Clusters and The Dark Energy

星系团和暗能量

• 批准号: 0205010
• 负责人: Martin White
• 金额: $ 22.53万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0205010&HistoricalAwards=false
• 关键词: Galaxy; Clusters; Dark; Energy

AST 0205010WhiteCosmology has made tremendous advances in the past decade, with many fundamental questions approaching resolution. We now have a highly predictive theory for the emergence of large-scale structure in the Universe. As is often the case, this theory raises new questions, and several crucial issues still remain to be understood. First, the nature of most of the matter in the Universe remains mysterious. Second, while we have known for some time that earthly matter doesn't dominate the energy in the Universe, we now believe that not even exotic `dark' matter plays that role. At present the Universe appears to be accelerating, driven by a mysterious component dubbed "dark energy''. Luckily we are in a "golden era'' of cosmological observations. Upcoming observations will soon constrain the initial conditions for structure formation and many cosmological parameters, allowing us to address the next frontier: the era of structure formation. A thorough understanding of structure formation is instrumental in determining both the consequences of the developing 'cosmic web' paradigm and the constraints on variations within this paradigm. The key to this understanding is clusters of galaxies. These are the largest known objects. They exhibit remarkable regularity, but our understanding of their structure is sensitive to our modeling assumptions. This project will construct computer models of galaxy clusters to develop and refine methods which will relate the properties of these clusters to the distribution and nature of the dark matter and the dark energy and thus to sharpen our tests of this dominant paradigm.***

AST 0205010 WhiteCosmology在过去十年中取得了巨大的进步，许多基本问题接近解决方案。 现在，我们对宇宙中大规模结构的出现具有高度预测的理论。通常，该理论提出了新的问题，并且仍然有待理解一些关键问题。首先，宇宙中大多数问题的本质仍然是神秘的。其次，虽然我们已经知道世俗的物质并不能主导宇宙中的能量，但我们现在认为，即使是异国情调的“黑暗”物质也没有发挥这种作用。 目前，宇宙似乎正在加速，这是一个被称为“黑能”的神秘组成部分的驱动。幸运的是，我们正处于宇宙学观察的“黄金时代”中。即将到来的观察很快将限制结构形成和许多宇宙学参数的初始条件，从而使我们能够解决下一个边界：结构形成的时代。对结构形成的透彻理解在确定发展“宇宙网”范式的后果以及对本范式内变化的约束方面的影响。这种理解的关键是星系群。这些是最大的已知对象。它们表现出显着的规律性，但是我们对它们的结构的理解对我们的建模假设敏感。 该项目将构建Galaxy簇的计算机模型，以开发和完善方法，这些方法将这些簇的特性与暗物质和暗能量的分布和性质相关联，从而促进我们对这种主要范式的测试。*** ***