Collaborative Research: Completing the Most Sensitive Low-frequency Survey for Radio Pulsars and Transients

合作研究：完成射电脉冲星和瞬变最敏感的低频调查

• 批准号: 2009335
• 负责人: Julia Deneva
• 金额: $ 16.38万
• 依托单位: George Mason University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2009335&HistoricalAwards=false
• 关键词: Collaborative; Research; Completing; Most; Sensitive

Scientists at two universities will work together to study the sky with a radio telescope in Puerto Rico. Their project will look to find rapid radio wavelength variations on timescales that would indicate the discovery of millisecond pulsars. Such pulsars can then be precisely timed to allow the detection of gravitational waves. Additionally, other newly discovered radio variable sources will reveal other interesting astronomical objects. Puerto Rican high school students will be involved in analyzing the data.A research team at George Mason University and West Virginia University will observe the entire night sky visible from the Arecibo Observatory at high time cadence. The primary science goal is to discover millisecond pulsars that will add to the NANOGrav pulsar timing array for nanohertz gravitational wave detection and the resultant probing of black hole binaries with much higher masses. Simulations using suitable search parameters estimate that the full survey will discover 20-30 millisecond pulsars and 150-200 normal pulsars. A well-tested software pipeline, and candidate classification tools that utilize modern inductive machine learning algorithms, will ensure that the data processing analysis will proceed swiftly. The survey will also allow exploration of fast radio bursts, and high brightness millisecond-duration radio bursts coming from cosmological distances.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

两所大学的科学家将共同合作，用波多黎各的射电望远镜研究天空。 他们的项目将寻找时间尺度上的快速无线电波长变化，这将表明毫秒脉冲星的发现。 这样的卫星可以精确地定时，以允许探测引力波。 此外，其他新发现的射电变量源将揭示其他有趣的天文物体。 波多黎各高中生将参与分析数据。乔治梅森大学和西弗吉尼亚大学的一个研究小组将以高时间节奏观察从阿雷西博天文台可见的整个夜空。 主要的科学目标是发现毫秒级脉冲星，这些脉冲星将添加到NANOGrav脉冲星定时阵列中，用于纳赫兹引力波探测和由此产生的对质量更高的黑洞双星的探测。 使用合适的搜索参数的模拟估计，完整的调查将发现20-30毫秒射电和150-200正常射电。经过良好测试的软件管道和利用现代归纳机器学习算法的候选分类工具将确保数据处理分析将迅速进行。该调查还将允许探索快速无线电爆发，以及来自宇宙学距离的高亮度毫秒持续时间的无线电爆发。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。