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Hawaii Supernova Flows

Hawaii Supernova Flows
夏威夷超新星流
批准号:
1911074
负责人:
Benjamin Shappee
金额:
$55.6万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2019
资助国家:
美国
项目状态:
已结题
起止时间:
2019-09-01 至 2024-08-31
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中文摘要
翻译
30年前,对宇宙微波背景的观测发现,在一个方向上比在相反方向上稍微热一些。公认的解释是,辐射是被银河系及其伴星630公里/S的运动所引起的多普勒频移。30年来,天文学家们一直在寻找导致这种极端运动的吸引力来源。一定有十亿光年大小的吸引子。唯一已知的研究如此大尺度运动的方法是基于一类超新星的明确定义的光度。在三年的时间里,我们的计划将监测数千颗这样的超新星,确定它们的距离,并首次绘制星系的运动图,以响应物质在10亿光年以外的分布。这项研究是探索暗物质本质的一部分,暗物质是物质的神秘主导成分。如果不了解暗物质,我们就无法理解宇宙的发展。这个问题是当前物理学和宇宙学研究工作的核心,最终也是理解宇宙和我们起源的社会兴趣的核心。通过视频、互动模型和虚拟现实,这些知识可以向公众开放。所描述的工作在非专业观众中产生了特别的共鸣,该计划致力于公共探索。在夏威夷大学,存在着识别z=0.1范围内的超新星大样本并获得必要的补充信息以确定准确距离的方法。在探测附近的超新星和记录其光曲线方面,最好的两个设施是ATLAS和ASAS-SN。每晚都会发现六个新的SNIa事件。必须在大量其他瞬变事件中确定这些事件。夏威夷大学的2.24米望远镜将被用来获取光谱,以证明超新星的类型,并给出红移。Maunakea上的380m UKIRT用于获取SNIa标准蜡烛性质最佳定义的近红外光线曲线信息。该奖项反映了NSF的法定使命,并通过使用基金会的智力优势和更广泛的影响审查标准进行评估,被认为值得支持。
英文摘要
Thirty years ago, observations of the cosmic microwave background was found to be slightly hotter in one direction than in the opposite direction. The accepted explanation was that the radiation is doppler shifted by the motion of our Milky Way Galaxy and its companions of 630 km/s. For 30 years, astronomers have sought the sources of attraction that would cause this extreme motion. There must be attractors on scales of a billion light years. The only known methodology to study motions on such large scales is based on the well-defined luminosities of a class of supernovae. Over three years, our program will monitor thousands of such supernovae, determine their distances and, for the first time, map the motions of galaxies in response to the distribution of matter to a distance of a billion light years. This research is part of a quest to understand the nature of dark matter, the mysterious dominant constituent of matter. We cannot comprehend the development of the universe without an understanding of dark matter. This problem is central to current research efforts in physics and cosmology and, ultimately, to societal interest in understanding the universe and our origins. Through videos, interactive models, and virtual reality this knowledge can be made accessible to the public. The work that is described achieves a particular resonance with lay audiences and this program is committed to public outreach.At the University of Hawaii, the means exist to identify a large sample of supernovae within z=0.1 and obtain the requisite supplementary information to determine accurate distances. The two facilities with the best cadences for detecting nearby supernovae and documenting their light curves are ATLAS and ASSAS-SN. A half dozen new SNIa events will be discovered every night. These events must be identified among the large number of other transients. The University of Hawaii 2.24m telescope will be employed to obtain spectra to certify the supernova type and to give a redshift. The 3.8m UKIRT on Maunakea is used to acquire light curve information in the near infrared where the standard candle nature of SNIa is best defined.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.
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MRI: Development of a Robotic University of Hawaii 88" Telescope (Robo88): A new tool for large surveys, rapid transient classification, and multimessenger astronomy
  • 批准号:
    1920392
  • 项目类别:
    Standard Grant
  • 资助金额:
    $99.13万
  • 财政年份:
    2019
  • 负责人:
    Benjamin Shappee
  • 依托单位:
WoU-MMA: Collaborative Research: All-Sky Automated Survey for -Supernovae in the Era of Multi-Messenger Astrophysics
  • 批准号:
    1908952
  • 项目类别:
    Standard Grant
  • 资助金额:
    $34.18万
  • 财政年份:
    2019
  • 负责人:
    Benjamin Shappee
  • 依托单位:
海外基金