Conference Proposal: The Radio Synchrotron Background

会议提案：无线电同步加速器背景

• 批准号: 1557628
• 负责人: Jack Singal
• 金额: $ 3.12万
• 依托单位: University of Richmond
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-03-01 至 2018-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1557628&HistoricalAwards=false
• 关键词: Conference; Proposal; Radio; Synchrotron; Background

Astronomers have studied the radio waves that come to us from the universe since the 1930s. One fascinating phenomenon that has been measured in radio light is a faint, diffuse glow which covers the entire sky. This glow is best described as the "Radio Synchrotron Background", where the term "synchrotron" refers to particles making radio waves when they spin around magnetic fields. Interest in the "Radio Synchrotron Background" has been rekindled recently because of new measurements. This radio glow presents a mystery because it is difficult to explain how it came to be there with known astrophysical processes. It represents one of the mysteries of contemporary astrophysics. While there have been many publications in the literature on this topic, there has not yet been a scientific workshop. We will hold the first scientific workshop on the radio synchrotron background, which will bring together scientists working in these overlapping fields to discuss the radio synchrotron background in person for the first time. There are implications for many areas of active research in contemporary astrophysics. The workshop will inspire new collaborations and new lines of inquiry, and may spur future meetings on the topic. This project funds travel support toward allowing scientists to attend the workshop as well as for a talk for the public and for a report for the scientific community on the outcome of the meeting. The workshop will be held at the University of Richmond. The Radio Synchrotron Background is a newly re-appreciated astrophysical phenomenon which has been a subject of great interest to many in the community. Combining the ARCADE 2 balloon-based absolute spectrum data from 3-90 GHz with absolutely calibrated single-dish diffuse radio surveys at lower frequencies reveals a radio synchrotron excess that is several times brighter than was expected by many. The origin of the radio synchrotron background is one of the mysteries of contemporary astrophysics. It is difficult to produce the observed level of surface brightness by known processes without violating constraints. The existence of the radio background at the observed levels presents profound challenges for our current understanding of radio emission in the Galaxy and the universe. As demonstrated in many recent publications, there are implications for many areas of astrophysics, including cosmic ray propagation, galactic and extragalactic magnetic fields, the radio to far-infrared correlation, radio source counts, X-ray source counts, quasar luminosity functions, dark matter annihilation, polarization of foregrounds in microwave background maps, population III stars, mergers of clusters, and many more. The workshop will feature plenary sessions made up of multiple presentations by attendees interspersed with and question and discussion periods centered around different topics that study of the radio synchrotron background touches. The visual component of individual presentations, in the form of PDF, PowerPoint, or similar files will be made available on the Web. Additionally, a report will be prepared for the scientific community on the outcome of the meeting. The priorities identified in the report will be determined by consensus of the meeting attendees as synthesized by the organizing committee. Finally, new collaborations and working relationships will be established.

自1930年代以来，天文学家研究了从宇宙中引起的广播波。 在无线电灯中测量的一种令人着迷的现象是覆盖整个天空的微弱的散射光芒。 这种光芒最好被描述为“无线电同步子背景”，其中术语“同步子”是指粒子在磁场周围旋转时产生无线电波。 由于新的测量值，对“无线电同步背景”的兴趣最近重新点燃。 这种无线电发光呈现出一个谜，因为很难通过已知的天体物理过程来解释它是如何出现的。 它代表了当代天体物理学的奥秘之一。 尽管有关该主题的文献中有许多出版物，但尚未有一个科学研讨会。 我们将举办第一个在无线电同步物背景的科学研讨会，该研讨会将召集在这些重叠领域中工作的科学家，首次亲自讨论无线电同步背景。 对当代天体物理学的许多积极研究领域都有意义。 该研讨会将激发新的合作和新的询问线，并可能会激发有关该主题的未来会议。 该项目为允许科学家参加研讨会以及向公众的演讲以及科学界的会议结果报告提供了资金。 研讨会将在里士满大学举行。 无线电同步加速器背景是一种新的重新欣赏的天体物理现象，对社区中的许多人都引起了极大的兴趣。在较低的频率下，将3-90 GHz的Arcade 2基于Arcade 2基于气球的绝对频谱数据与绝对校准的单次弥漫性无线电调查相结合，这表明无线电同步器多余的过量，这比许多人所预期的要明亮几倍。 无线电同步背景的起源是当代天体物理学的奥秘之一。 很难通过已知的过程产生观察到的表面亮度，而不会违反约束。 无线电背景在观察到的水平上的存在为我们当前对银河系和宇宙无线电发射的理解带来了深远的挑战。 As demonstrated in many recent publications, there are implications for many areas of astrophysics, including cosmic ray propagation, galactic and extragalactic magnetic fields, the radio to far-infrared correlation, radio source counts, X-ray source counts, quasar luminosity functions, dark matter annihilation, polarization of foregrounds in microwave background maps, population III stars, mergers of clusters, and many more. 该研讨会将由散布在各种主题的与会者的参与者组成的多个演讲组成的全体会议上，这些主题围绕着研究无线电同步物背景触摸的不同主题。 以PDF，PowerPoint或类似文件的形式的各个演示文稿的视觉组成部分将在网络上提供。 此外，将为科学界做好有关会议结果的报告。 报告中确定的优先事项将由组织委员会合成的会议参与者的共识确定。 最后，将建立新的合作和工作关系。