Modeling foregrounds for CMB and 21 cm cosmology

CMB 和 21 cm 宇宙学的前景建模

• 批准号: 0908950
• 负责人: Angelica de Oliveira-Costa
• 金额: $ 52.63万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0908950&HistoricalAwards=false
• 关键词: Modeling; foregrounds; CMB; 21; cm

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). This research project involves a comprehensive study of galactic foreground emission for removal from sensitive maps of the Cosmic Microwave Background (CMB), necessary to produce useful images of the CMB. Polarized and unpolarized galactic emission from 10 MHz to 3000 GHz will be analyzed by combining available data with simulations. This will be useful both for foreground-cleaning of current measurements, and for optimizing the design of future experiments. Publicly available products will include a Global Sky Model; dust maps; improved foreground-cleaned polarized CMB maps; realistic hydrogen emission 21cm foreground data cubes; and cleaning algorithms and software.Broader impacts of this program include student training, development of broadly useful cosmological tools, and public talks and other educational outreach.

该奖项是根据2009年《美国复苏与再投资法》（公法111-5）资助的。该研究项目涉及对银河前景发射的全面研究，以从宇宙微波背景（CMB）的敏感图中删除，这是生成CMB有用图像所必需的。 通过将可用数据与模拟相结合，将分析从10 MHz到3000 GHz的偏振和非极化银河发射。 这对于当前测量值的前景清洁和优化未来实验的设计都非常有用。公共产品将包括全球天空模型；防尘地图；改善了前景清洁的极化CMB图；逼真的氢排放21cm前景数据立方体；以及清洁算法和软件。该计划的影响力包括学生培训，开发广泛有用的宇宙学工具以及公众谈判以及其他教育外展。