The First Luminous Objects: Interplay between Galaxy Formation and the Intergalactic Medium

第一个发光物体：星系形成与星系间介质之间的相互作用

• 批准号: 0407084
• 负责人: Siang Peng Oh
• 金额: --
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0407084&HistoricalAwards=false
• 关键词: First; Luminous; Objects; Interplay; between

AST-0407084OhThe study of the cosmological Dark Ages is gaining momentum, fueled by recent observational breakthroughs and strides in computing power. This project has three main themes. Firstly, observations now suggest that the reionization history of the Universe progressed in a non-monotonic manner, and simulations and semi-analytic models will be developed and used to test possible contributing effects. Secondly, optical depth effects and photon trapping will be added to simulations of early star formation, to try to make those studies more realistic. Finally, brightness temperature fluctuations due to the free-free contribution from the reionization epoch will be modeled in detail, for comparison to planned observations. This research could significantly alter the standard picture of how early star formation is thought to proceed. It has a direct impact on the interpretation of recent observations, and bears upon future instruments, possibly influencing their design and observational strategies. Collaboration meetings will strengthen ties with researchers on the East Coast and in Japan. The Dark Ages is a glamorous subject, ideally suited for its intended use in public talks and journalism, planned in conjunction with the host institution's strong outreach program.

宇宙学黑暗时代的研究正在获得动力，最近的观测突破和计算能力的进步推动了这一研究。 该项目有三个主题。 首先，现在的观测表明，宇宙的再电离历史以非单调的方式进行，模拟和半解析模型将被开发并用于测试可能的影响。 其次，光学深度效应和光子捕获将被添加到早期星星形成的模拟中，以使这些研究更加现实。 最后，亮度温度的波动，由于自由的贡献，从再电离时代将详细建模，计划的观测比较。 这项研究可能会大大改变早期星星形成过程的标准图景。 它对最近观测的解释有直接影响，并对未来的仪器产生影响，可能影响其设计和观测战略。 合作会议将加强与东海岸和日本研究人员的联系。 黑暗时代是一个迷人的主题，非常适合其在公共演讲和新闻中的预期用途，与主办机构的强大的推广计划相结合。