U.S.-Italy Cooperative Research: Optical Variability of Quasars

美意合作研究：类星体的光学变率

• 批准号: 9214905
• 负责人: Richard Kron
• 金额: $ 1.5万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-08-15 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9214905&HistoricalAwards=false
• 关键词: U.S.; Italy; Cooperative; Research; Optical

9214905 Kron This three-year award will support U.S.-Italy cooperative research between Richard Kron, University of Chicago, and Dario Trevese of the University of Rome, "La Sapienza," Italy, on the optical variability of quasars. This is a topic in quasar research that is central to the understanding of the power source. The research collaboration will measure the optical variability of a statistical sample of quasars based on archival data that span 15 years. Kron and Trevese will complete a detailed statistical analysis of the quasar light curves, and will observe spectroscopically a sample of galaxies selected on the basis of their nuclear variability, which will allow the study of the continuity between quasars and galaxies with active nuclei, thus constraining models for the cosmological evolution of quasars. Thorough research on the variability of quasars will contribute to our understanding of the mechanism by which quasars attain their enormous luminosity by the infall of material into a black hole. This work may lead to alternative ways of searching for quasars, through their variability, which has until now been only partially successful. * * *

小行星9214905 这个为期三年的奖项将支持美国-意大利芝加哥大学Richard Kron和罗马大学“La Sapienza”（意大利）Dario Trevese合作研究类星体的光学可变性。 这是类星体研究中的一个主题，对于理解能量源至关重要。 该研究合作将基于跨越15年的档案数据测量类星体统计样本的光学可变性。 Kron和Trevese将完成类星体光变曲线的详细统计分析，并将通过光谱观察根据其核可变性选择的星系样本，这将允许研究类星体和具有活动核的星系之间的连续性，从而限制类星体的宇宙学演化模型。 深入研究类星体的光变特性，将有助于我们理解类星体通过物质进入黑洞而获得巨大亮度的机制。 这项工作可能会导致寻找类星体的替代方法，通过他们的变化，这到目前为止只是部分成功。 * * *