CAREER: Multiwavelength Studies of the Star Formation and Accretion Histories of the Universe

职业：宇宙恒星形成和吸积历史的多波长研究

• 批准号: 0239425
• 负责人: Amy Barger
• 金额: $ 47.51万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-15 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0239425&HistoricalAwards=false
• 关键词: CAREER; Multiwavelength; Studies; Star; Formation

AST-0239425BargerThis project intends to identify and study the sources that comprise the X-ray extragalactic background light. For the first time, a nearly complete census of soft and hard X-ray sources can now be made using images from the Chandra X-ray Observatory, and follow-up observations will be made from the ground at radio, submillimeter, infrared and optical wavelengths. Study of the supermassive black holes in the host galaxies should help to resolve one of the most important questions about the thermal history of the Universe, namely, whether the intergalactic medium was reionized by accreting black holes or by stars. The combination of very deep with wide area data will determine the luminosity function for active galactic nuclei and thus reconstruct the black hole accretion history of the Universe.The significant discoveries that will be made in this very special era of observational cosmology will be presented to the public and to educators through various programs.***

AST-0239425 Barger该项目旨在识别和研究构成X射线河外背景光的来源。 这是第一次，现在可以使用钱德拉X射线天文台的图像对软X射线和硬X射线源进行几乎完整的普查，并将在无线电，亚毫米，红外和光学波长的地面进行后续观测。 对宿主星系中超大质量黑洞的研究应有助于解决关于宇宙热历史的一个最重要的问题，即星系际介质是由吸积黑洞还是恒星再电离的。 极深和广域数据的结合将确定活动星系核的光度函数，从而重建宇宙的黑洞吸积历史。在这个非常特殊的观测宇宙学时代将取得的重大发现将通过各种计划呈现给公众和教育工作者。