CAREER: Novel Approaches and Instrumentation for 21cm Cosmology Experiments

职业：21 厘米宇宙学实验的新方法和仪器

• 批准号: 1352519
• 负责人: Aaron Parsons
• 金额: $ 78.74万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1352519&HistoricalAwards=false
• 关键词: CAREER; Novel; Approaches; Instrumentation; 21cm

Redshifted emission from the 21cm hyperfine transition of neutral hydrogen has gained considerable attention as a unique tracer of the primordial intergalactic medium. This award will enable the PI to develop the foundation of a next generation of 21cm cosmology instrumentation, incorporating techniques and principles learned from his current Precision Array to Probe the Epoch of Reionization (PAPER) experiment. The PI will construct three prototype multi-element experiments that will allow him to study three distinct cosmological epochs: the cosmic dark ages, the epoch of reionization, and the onset of baryon acoustic oscillations. The antenna designs and digitization electronics from these experiments will in turn provide invaluable information on techniques to remove contaminating astrophysical foregrounds in future instruments.The birth of the first luminous objects (stars, black holes) in the universe that ultimately stems from the Big Bang is one of the last unexplored phases of cosmic evolution. The instruments that will be produced as part of this award will facilitate transformational science in this area, and will provide key constraints on the large-scale structure of the universe, as well as the evolution of cosmological expansion. The award will also enable the PI to train the next generation of instrument builders by offering internships for students at UC Berkeley's Radio Astronomy Laboratory. Finally, the PI will produce numerous public-domain pedagogical videos, which will enable a cadre of instrumentalists and students to quickly acquire basic proficiency in radio-astronomy instrumentation.

从中性氢的21厘米超精细转变中进行的红移发射已成为原始播层间培养基的独特示踪剂。该奖项将使PI能够开发下一代21cm宇宙学仪器的基础，并结合从他当前的精确阵列中学到的技术和原理，以探究电离时代（论文）实验。 PI将构建三个原型的多元元素实验，使他能够研究三个不同的宇宙学时代：宇宙黑暗时代，电离时代和巴里昂声学振荡的发作。这些实验中的天线设计和数字化电子又将提供有关以后仪器中污染污染天体物理前景的技术的宝贵信息。宇宙中第一个发光物体（恒星，黑色孔）的诞生最终源自大爆炸，这是大爆炸源是最后一个未探索的辅助阶段的宇宙阶段之一。将作为该奖项的一部分生产的工具将有助于该领域的转型科学，并将对宇宙的大规模结构以及宇宙学扩展的演变提供关键限制。该奖项还将使PI通过在UC Berkeley的射电天文学实验室为学生提供实习来培训下一代仪器建设者。最后，PI将制作众多的公共域教学视频，这​​将使一群乐器演奏家和学生能够快速获得无线电工具的基本水平。