Exploring the Radio Transient and Static Sky with the Allen Telescope Array Five GHz Sky Survey

使用艾伦望远镜阵列 5 GHz 巡天探索无线电瞬变和静态天空

• 批准号: 0909245
• 负责人: Geoffrey Bower
• 金额: $ 46.39万
• 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: 2009
• 资助国家: 美国
• 起止时间: 2009-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0909245&HistoricalAwards=false
• 关键词: Exploring; Radio; Transient; Static; Sky

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Dr. Geoffrey Bower of the University of California Berkeley will undertake an extensive survey of static and variable sources at radio wavelengths, using the new Allen Telescope Array. The new survey is called the Five GHz Sky Survey (FiGSS), and will cover about 10,000 square degrees (one-third of the radio sky). It will also include cross-comparisons with surveys at optical and other wavelengths. This static survey will be considerably more sensitive than existing surveys. Two smaller fields (100 and 10 square degrees) will be observed with rapid cadence (every 10 days and daily, respectively). The goals of the transient survey include systematic search for radio supernovae in nearby galaxies; discovery of orphan gamma-ray burst afterglows, the predicted counterparts to otherwise unobservable stellar explosions; discovery of radio emission from tidal disruption of stars by massive black holes; and detection of stellar-mass black hole eruptions and dwarf star outbursts. Many of these phenomena have not been characterized in a systematic way to date. Research on FiGSS will be conducted by a small group centered at Berkeley, including postdoctoral fellows, and graduate and undergraduate students, providing valuable training for the next generation of astronomers. The results of FiGSS will be disseminated to the larger community through the Virtual Observatory.

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。加州大学伯克利分校的杰弗里·鲍尔将使用新的艾伦望远镜阵列，对无线电波长的静态和可变源进行广泛的调查。这项新的调查被称为5 GHz巡天（FiGSS），将覆盖大约1万平方度（射电天空的三分之一）。它还将包括与光学和其他波长的调查进行交叉比较。这种静态调查将比现有的调查敏感得多。两个较小的场地（100平方度和10平方度）将以快速的节奏观察（分别每10天和每天）。瞬态巡天的目标包括系统地搜寻邻近星系中的射电超新星；发现孤立的伽玛射线爆发余辉，预测的余辉与其他无法观测到的恒星爆炸相对应；发现由大质量黑洞潮汐破坏恒星产生的射电辐射；以及对恒星质量黑洞爆发和矮星爆发的探测。到目前为止，许多这些现象还没有被系统地描述出来。FiGSS的研究将由一个以伯克利为中心的小组进行，包括博士后、研究生和本科生，为下一代天文学家提供有价值的培训。FiGSS的结果将通过虚拟天文台传播给更大的社区。