Pinpointing the Science of Fast Radio Bursts

精确定位快速射电暴的科学原理

• 批准号: 1714897
• 负责人: Sarah Spolaor
• 金额: $ 45.74万
• 依托单位: West Virginia University Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1714897&HistoricalAwards=false
• 关键词: Pinpointing; Science; Fast; Radio; Bursts

Bursts of radio emission from space lasting only a few thousandths of a second were first discovered in 2007. These events, now called "fast radio bursts" (FRBs), were considered in a 2016 Nature magazine feature to be "the most perplexing mystery" in astronomy today.   Around two dozen FRBs have been detected and have been shown to come from far outside our Galaxy.  A research team led by West Virginia University (WVU) will make use of a new capability of the world's most powerful radio telescope array, NSF's Karl G. Jansky Very Large Array (VLA), to detect and study several dozen FRBs over three years.  For the first time, these astronomers will be able to accurately map out the locations, distances, and environments of FRBs and identify the galaxies in which they arise. This will allow the researchers to unequivocally find answers to fundamental questions about fast radio burst origins and use them to better understand the Universe. The team will also directly engage thousands of high school students in the excitement and dynamism of the experiment by making it part of WVU's "Pulsar Search Collaboratory" education and outreach network. This program will provide students access to the FRB candidates with which they can assess and discover new events and directly engage in the research and discovery process.The WVU-based research team will use the VLA to provide arcsecond localizations of FRBs, which will, for the first time, allow their origins and nature to be studied in detail. The observations will begin to address whether the phenomenon has more than one progenitor and how FRBs can be used as tools to probe the intergalactic medium and the makeup of other galaxies. The multi-wavelength studies of FRB hosts will lay a statistically strong foundation for the future of FRB follow-up science that will endure for years into the future.  A critical component of the program will be automatic identification and public release of confident transitory events, which will open opportunities to other scientists and facilities to use the results immediately, further advancing time-domain science.

2007年首次发现了来自太空的无线电辐射爆发，持续时间仅为千分之几秒。 这些事件现在被称为“快速射电暴”（FRB），在2016年《自然》杂志的一篇专题文章中被认为是当今天文学中“最令人困惑的谜团”。 大约有24个FRB被检测到，并被证明来自我们银河系以外的地方。 由西弗吉尼亚大学（WVU）领导的一个研究小组将利用世界上最强大的射电望远镜阵列的新功能，NSF的卡尔G。Jansky甚大阵列（VLA），在三年内探测和研究几十个FRB。 这是第一次，这些天文学家将能够准确地绘制出FRB的位置，距离和环境，并确定它们出现的星系。 这将使研究人员能够明确地找到有关快速射电暴起源的基本问题的答案，并利用它们来更好地了解宇宙。 该团队还将通过使其成为西弗吉尼亚大学“脉冲星搜索合作实验室”教育和推广网络的一部分，直接吸引数千名高中生参与实验的兴奋和活力。 该项目将为学生提供接触FRB候选者的机会，他们可以评估和发现新事件，并直接参与研究和发现过程。西弗吉尼亚大学的研究团队将使用VLA提供FRB的角秒定位，这将首次允许详细研究它们的起源和性质。观测将开始解决这一现象是否有一个以上的祖先，以及FRB如何被用作探测星系际介质和其他星系构成的工具。FRB宿主的多波长研究将为FRB后续科学的未来奠定坚实的统计基础，这些科学将持续多年。 该计划的一个关键组成部分将是自动识别和公开发布可信的瞬态事件，这将为其他科学家和设施提供立即使用结果的机会，进一步推进时域科学。

项目成果

A repeating fast radio burst source localized to a nearby spiral galaxy

• DOI: 10.1038/s41586-019-1866-z
• 发表时间: 2020-01-06
• 期刊: NATURE
• 影响因子: 64.8
• 作者: Marcote, B.;Nimmo, K.;Zwaniga, A. V.
• 通讯作者: Zwaniga, A. V.

A Search for Late-time Radio Emission and Fast Radio Bursts from Superluminous Supernovae

• DOI: 10.3847/1538-4357/ab4adb
• 发表时间: 2019-10
• 期刊: The Astrophysical Journal
• 作者: C. Law;C.M.B. Omand;K. Kashiyama;K. Murase;G. Bower;K. Aggarwal;S. Burke-Spolaor;B. Butler

Comprehensive Analysis of a Dense Sample of FRB 121102 Bursts

• DOI: 10.3847/1538-4357/ac2577
• 发表时间: 2021-07
• 期刊: The Astrophysical Journal
• 作者: K. Aggarwal;D. Agarwal;E. Lewis;R. Anna-Thomas;Jacob Cardinal Tremblay;S. Burke-Spolaor;M. Mclaughlin-M.

A Deep Targeted Search for Fast Radio Bursts from the Sites of Low-redshift Short Gamma-Ray Bursts

• DOI: 10.3847/1538-4357/ab58c3
• 发表时间: 2019-09
• 期刊: The Astrophysical Journal
• 作者: D. Madison;D. Agarwal;K. Aggarwal;O. Young;H. Cromartie;M. Lam;M. Lam;S. Chatterjee;S. Chatterjee;J. Cordes;J. Cordes;N. Garver-Daniels;D. Lorimer;R. Lynch;M. Mclaughlin;S. Ransom;R. Wharton

Probabilistic Association of Transients to their Hosts (PATH)

• DOI: 10.3847/1538-4357/abe8d2
• 发表时间: 2021-02
• 期刊: The Astrophysical Journal
• 作者: K. Aggarwal;T. Budav'ari;A. Deller;T. Eftekhari;C. James;J. Prochaska;S. Tendulkar