Collaborative Research: Optimal Statistics for Redshifted 21 cm Observations of the Reionization Epoch
合作研究:再电离时代红移 21 cm 观测的最佳统计
基本信息
- 批准号:1109257
- 负责人:
- 金额:$ 34.12万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2011
- 资助国家:美国
- 起止时间:2011-09-01 至 2015-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
One important new frontier of cosmology is the Epoch of Reionization (EoR), marking the time when the Universe's first luminous objects formed and the time of the final phase of cosmological formation of structure in the Universe. Most investigators seek to observe the EoR by detecting neutral hydrogen gas of the intergalactic medium (IGM) through its signature in the redshifted 21-cm spectral line. While a variety of projects are currently underway to detect the EoR signal, thermal noise will dominant the signal and will require careful statistical analysis of the observational data to infer the statistical nature of the EoR signal. Unfortunately, one of the statistical techniques employed will be to characterize power spectrum of the EoR signal even though this signal is expected to be non-Gaussian.The intent of this project is to systematically explore statistics that reach far beyond the power spectrum technique. The investigators will compute radiative transfer simulations of reionization for a wide variety of well-defined theoretical models. Expected thermal noise, foreground corruption, and instrumental distortions will next be added to the simulations to produce complete simulations of observational sky maps in 21 cm. The investigators will next measure a range of statistics on these simulated observational maps to characterize the most robust useful information obtainable from the EoR signal.Educationally, an undergraduate will receive support and mentoring at one institution, and graduate students at two institutions will receive support and mentoring. An important feature of student training in this project is the interdisciplinary nature of the research including complex statistical analysis, analytical and numerical simulations, instrumental modeling, and astrophysics. The student experience will also emphasize the interconnection between experimental conditions and scientific analysis.
宇宙学的一个重要的新前沿是再电离时代(EoR),标志着宇宙中第一个发光物体形成的时间和宇宙结构形成的最后阶段。 大多数研究者试图通过在红移21厘米谱线上探测星系际介质(IGM)中的中性氢气来观测EoR。 虽然目前正在进行各种项目来探测EoR信号,但热噪声将主导信号,需要对观测数据进行仔细的统计分析,以推断EoR信号的统计性质。 不幸的是,所采用的统计技术之一将是表征EoR信号的功率谱,即使该信号预计是非高斯的。本项目的目的是系统地探索远远超出功率谱技术的统计。 研究人员将计算各种定义明确的理论模型的再电离辐射传输模拟。 预计的热噪声,前景腐败和仪器失真将被添加到模拟中,以产生21厘米观测天空图的完整模拟。 接下来,研究人员将测量这些模拟观测图上的一系列统计数据,以表征从EoR信号中可获得的最强大的有用信息。在教育方面,本科生将在一个机构获得支持和指导,两个机构的研究生将获得支持和指导。 在这个项目中,学生培训的一个重要特点是研究的跨学科性质,包括复杂的统计分析,分析和数值模拟,仪器建模和天体物理学。 学生的经验也将强调实验条件和科学分析之间的相互联系。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Judd Bowman其他文献
The impact of a gamified mobile question-asking app on museum visitor group interactions: an ICAP framing
游戏化移动提问应用程序对博物馆参观者群体互动的影响:ICAP 框架
- DOI:
10.1007/s11412-021-09350-w - 发表时间:
2021 - 期刊:
- 影响因子:4.3
- 作者:
Jesse Ha;Luis E. Pérez Cortés;Man Su;Brian C. Nelson;C. Bowman;Judd Bowman - 通讯作者:
Judd Bowman
The First Billion Years Report of a Study Program Team Leads Study Participants Participant Affiliation
研究计划团队的第一个十亿年报告引领研究参与者 参与者隶属关系
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
Judd Bowman - 通讯作者:
Judd Bowman
Designing for Data with Ask Dr. Discovery: Design Approaches for Facilitating Museum Evaluation with Real-Time Data Mining
- DOI:
10.1007/s10758-017-9313-4 - 发表时间:
2017-03-20 - 期刊:
- 影响因子:3.500
- 作者:
Brian C. Nelson;Cassie Bowman;Judd Bowman - 通讯作者:
Judd Bowman
Peering into the dark (ages) with low-frequency space interferometers
- DOI:
10.1007/s10686-021-09743-7 - 发表时间:
2021-09-03 - 期刊:
- 影响因子:2.200
- 作者:
Léon V. E. Koopmans;Rennan Barkana;Mark Bentum;Gianni Bernardi;Albert-Jan Boonstra;Judd Bowman;Jack Burns;Xuelei Chen;Abhirup Datta;Heino Falcke;Anastasia Fialkov;Bharat Gehlot;Leonid Gurvits;Vibor Jelić;Marc Klein-Wolt;Joseph Lazio;Daan Meerburg;Garrelt Mellema;Florent Mertens;Andrei Mesinger;André Offringa;Jonathan Pritchard;Benoit Semelin;Ravi Subrahmanyan;Joseph Silk;Cathryn Trott;Harish Vedantham;Licia Verde;Saleem Zaroubi;Philippe Zarka - 通讯作者:
Philippe Zarka
Judd Bowman的其他文献
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{{ truncateString('Judd Bowman', 18)}}的其他基金
Probing Cosmic Dawn with End-to-End Forward Models
用端到端正向模型探索宇宙黎明
- 批准号:
2206766 - 财政年份:2022
- 资助金额:
$ 34.12万 - 项目类别:
Standard Grant
Collaborative Research: Commensal All-sky Imaging of Low-Frequency Transients with EPIC
合作研究:使用 EPIC 进行低频瞬变的共生全天成像
- 批准号:
2108115 - 财政年份:2021
- 资助金额:
$ 34.12万 - 项目类别:
Standard Grant
Collaborative Research: EDGES-3: Validating and Refining Global 21cm Measurements of Cosmic Dawn
合作研究:EDGES-3:验证和完善宇宙黎明的全球 21 厘米测量
- 批准号:
1908933 - 财政年份:2019
- 资助金额:
$ 34.12万 - 项目类别:
Standard Grant
The Dawn of Hydrogen Cosmology: First Stars, Dark Matter, and the Thermal History of the Early Universe
氢宇宙学的黎明:第一颗恒星、暗物质和早期宇宙的热史
- 批准号:
1813850 - 财政年份:2018
- 资助金额:
$ 34.12万 - 项目类别:
Continuing Grant
First Deployment of a Novel Imaging Correlator for Radio Astronomy with the Long Wavelength Array
首次部署用于射电天文学的长波长阵列新型成像相关器
- 批准号:
1710719 - 财政年份:2017
- 资助金额:
$ 34.12万 - 项目类别:
Standard Grant
Collaborative Research: Detecting the First Light and Reionization of the Universe using Advanced Radio Instrumentation
合作研究:使用先进无线电仪器探测宇宙的第一束光和再电离
- 批准号:
1609450 - 财政年份:2016
- 资助金额:
$ 34.12万 - 项目类别:
Continuing Grant
COLLABORATIVE RESEARCH: Observing the Epoch of Reionization with the Murchison Widefield Array
合作研究:用默奇森宽场阵列观察再电离时代
- 批准号:
1410719 - 财政年份:2014
- 资助金额:
$ 34.12万 - 项目类别:
Standard Grant
An External Calibrator for HI Observatories
HI 天文台的外部校准器
- 批准号:
1407646 - 财政年份:2014
- 资助金额:
$ 34.12万 - 项目类别:
Standard Grant
Facilitating Museum Evaluation with Real-Time Data Mining
通过实时数据挖掘促进博物馆评估
- 批准号:
1438825 - 财政年份:2014
- 资助金额:
$ 34.12万 - 项目类别:
Standard Grant
EDGES-2: Detecting First Light and Reionization through the Global 21 cm Signature
EDGES-2:通过全局 21 厘米特征检测第一光和再电离
- 批准号:
1207761 - 财政年份:2012
- 资助金额:
$ 34.12万 - 项目类别:
Continuing Grant
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