Collaborative Research: Redshift Measurements of the Swift Serendipitous Cluster Survey

合作研究:快速偶然星团巡天的红移测量

基本信息

  • 批准号:
    1413056
  • 负责人:
  • 金额:
    $ 33.5万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2014
  • 资助国家:
    美国
  • 起止时间:
    2014-09-01 至 2019-08-31
  • 项目状态:
    已结题

项目摘要

One of the primary objectives of extragalactic astronomy is to understand the formation and evolution of structures over cosmic time. Clusters of galaxies are the largest gravitationally bound structures in the universe, and so a better understanding of their formation and evolution leads to deeper knowledge of the physics of the cosmos. In order to fully probe the physics and evolution of clusters, however, a co-ordinated multi-wavelength campaign is needed: while observations with X-ray telescopes are excellent at finding clusters, follow-up observations with optical telescopes are critical to measuring their distances from us. This collaborative project will use the Michigan-Dartmouth-MIT (MDM) 2.4m, Magellan, and Large Binocular Telescope (LBT) optical observatories to measure the redshifts and distances to clusters identified in the X-ray Swift Serendipitous Cluster Survey (SSCS). The program will produce one of the largest X-ray selected cluster catalogs to date, and make it available to the entire astronomical community. The increased numbers of high-redshift clusters as a result of this work will lead to a better understanding of the evolution of cluster properties over cosmic time. The team will also study the relationships between the optical and X-ray properties of clusters as a function of redshift. Finally, they will use the sample to constrain cosmological parameters, such as the energy densities of dark matter and dark energy. The two Principal Investigators of this collaboration will also launch an innovative series of outreach events that are designed to further develop the STEM workforce. At the University of Oklahoma-Norman, Dr. Xinyu Dai will use a portable planetarium to deliver presentations to high schools in the Greater Oklahoma City area. At the same time, Dr. Joel Bregman will develop new shows for the on-campus planetarium at the University of Michigan Ann-Arbor. The results of their scientific efforts will also be distributed to the general public.
星系外天文学的主要目标之一是了解结构在宇宙时间内的形成和演化。星系团是宇宙中最大的引力束缚结构,因此更好地理解它们的形成和演化将导致对宇宙物理学的更深入了解。然而,为了全面探测星团的物理和演化,需要一个协调的多波长运动:虽然x射线望远镜的观测在寻找星团方面非常出色,但光学望远镜的后续观测对于测量它们与我们的距离至关重要。这个合作项目将使用密歇根-达特茅斯-麻省理工学院(MDM) 2.4m、麦哲伦和大型双筒望远镜(LBT)光学天文台来测量x射线雨燕意外星团调查(SSCS)中确定的星团的红移和距离。该计划将产生迄今为止最大的x射线选择星团目录之一,并将其提供给整个天文学界。由于这项工作,高红移星团数量的增加将有助于更好地理解星团性质在宇宙时间内的演变。该团队还将研究星团的光学和x射线特性之间的关系,作为红移的函数。最后,他们将使用样本来约束宇宙学参数,例如暗物质和暗能量的能量密度。此次合作的两位首席研究员还将推出一系列创新的外展活动,旨在进一步发展STEM员工队伍。在俄克拉何马大学诺曼分校,戴欣宇博士将使用便携式天文馆给大俄克拉何马城地区的高中做报告。与此同时,Joel Bregman博士将为密歇根大学安阿伯分校的校园天文馆开发新的节目。他们的科研成果也将向公众公布。

项目成果

期刊论文数量(0)
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Xinyu Dai其他文献

Study on evidence-based LPSA method in nuclear power plant under abnormal operating conditions
  • DOI:
    10.1016/j.anucene.2020.107874
  • 发表时间:
    2021-02-01
  • 期刊:
  • 影响因子:
  • 作者:
    Hongxing Lu;Ming Yang;Zhihui Xu;Xinyu Dai;Quanliu Ye;Jun Yang
  • 通讯作者:
    Jun Yang
Research progress in the treatment of gallstones with laparoscopic and endoscopic surgery: a narrative review
  • DOI:
    10.1186/s12893-025-02977-8
  • 发表时间:
    2025-05-29
  • 期刊:
  • 影响因子:
    1.800
  • 作者:
    Yue Zhang;Xinyu Dai;Ruifeng Duan;Lijuan Wei
  • 通讯作者:
    Lijuan Wei
Almost gone: SN 2008S and NGC 300 2008OT-1 are fainter than their progenitors
几乎消失了:SN 2008S 和 NGC 300 2008OT-1 比它们的祖先更暗
  • DOI:
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    0
  • 作者:
    S. Adams;C. Kochanek;J. L. Prieto;J. L. Prieto;Xinyu Dai;B. Shappee;K. Stanek
  • 通讯作者:
    K. Stanek
Improving Self Attention Networks with Sequential Relations
改进具有顺序关系的自注意力网络
Dr3: Ask Large Language Models Not to Give Off-Topic Answers in Open Domain Multi-Hop Question Answering
Dr3:要求大型语言模型不要在开放域多跳问答中给出偏离主题的答案

Xinyu Dai的其他文献

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{{ truncateString('Xinyu Dai', 18)}}的其他基金

A Comprehensive Study of AGN Optical Variability from Minute to Decade Time Scales
从分钟到十年时间尺度的活动星系核光学变率的综合研究
  • 批准号:
    2307802
  • 财政年份:
    2023
  • 资助金额:
    $ 33.5万
  • 项目类别:
    Standard Grant

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合作研究:透视高红移类星体:双子座近红外光谱巡天
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Collaborative Research: Redshift Measurements of the Swift Serendipitous Cluster Survey
合作研究:快速偶然星团巡天的红移测量
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合作研究:CDS
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合作研究:高红移重元素的光谱诊断
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合作研究:PRIMUS,在红移一号绘制宇宙地图
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