Characterizing the Stars and Galaxies that Drove Reionization

描述驱动再电离的恒星和星系

• 批准号: 1701440
• 负责人: Adam Beardsley
• 金额: $ 10万
• 依托单位: Beardsley Adam P
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-01 至 2020-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1701440&HistoricalAwards=false
• 关键词: Characterizing; Stars; Galaxies; Drove; Reionization

Adam Beardsley is awarded an NSF Astronomy and Astrophysics Postdoctoral Fellowship to conduct a program of research and education at Arizona State University. Beardsley will analyze data from large arrays of radio telescopes to detect hydrogen atoms from a time when the first stars formed in the Universe. Studying that period in cosmic history is important because it influenced the formation of objects such as galaxies and black holes. Alongside this research, Beardsley will train college students to design a low-cost radio telescope adaptable to high school and college classrooms, and he will conduct public outreach about radio astronomy with participation from these students.Beardsley proposes to detect the highly redshifted 21-cm line of intergalactic hydrogen from the Epoch of Reionization (EoR). By developing an imaging-based analysis pipeline for the Hydrogen Epoch of Reionization Array experiment, Beardsley seeks to obtain the first 21-cm EoR power spectrum detection and thus constrain models of reionization. Beardsley will also identify other probes of reionization by combining the 21-cm measurements with infrared galaxy surveys. For the educational component of his work, Beardsley will train undergraduate students to update the Very Small Radio Telescope (VSRT) program. He will also conduct astronomy outreach events featuring the students' work with the VSRT.

亚当比尔兹利被授予NSF天文学和天体物理学博士后奖学金，在亚利桑那州州立大学进行研究和教育计划。 比尔兹利将分析来自大型射电望远镜阵列的数据，以探测宇宙中第一批恒星形成时的氢原子。 研究宇宙历史上的这一时期很重要，因为它影响了星系和黑洞等物体的形成。 在这项研究的同时，比尔兹利还将培训大学生设计一种适用于高中和大学课堂的低成本射电望远镜，并将在这些学生的参与下开展射电天文学的公共宣传活动。比尔兹利提议探测来自再电离时代（EoR）的高度红移的21厘米星系际氢线。 通过为再电离阵列实验的氢时代开发基于成像的分析管道，比尔兹利试图获得第一个21厘米EoR功率谱检测，从而约束再电离模型。 比尔兹利还将通过将21厘米测量与红外星系巡天相结合来确定其他再电离探测器。 对于他的工作的教育部分，比尔兹利将培训本科生更新甚小射电望远镜（VSRT）计划。 他还将举办天文学外展活动，展示学生与VSRT的合作。

项目成果

Comparing Redundant and Sky-model-based Interferometric Calibration: A First Look with Phase II of the MWA

• DOI: 10.3847/1538-4357/aad3c3
• 发表时间: 2018-07
• 期刊: The Astrophysical Journal
• 作者: W. Li;J. Pober;B. Hazelton;N. Barry;M. Morales;I. Sullivan;A. Parsons;Z. Ali;J. Dillon;A. Beardsley;J. Bowman;F. Briggs;R. Byrne;P. Carroll;B. Crosse;D. Emrich;A. Ewall-Wice;L. Feng;T. Franzen;J. Hewitt;L. Horsley;D. Jacobs;M. Johnston-Hollitt;C. Jordan;R. Joseph;D. Kaplan;D. Kenney;H. Kim;P. Kittiwisit;A. Lanman;J. Line;B. McKinley;D. Mitchell;S. Murray;A. Neben;A. Offringa;D. Pallot;S. Paul;B. Pindor;P. Procopio;M. Rahimi;J. Riding;S. Sethi;N. Shankar;K. Steele;R. Subrahmanian;Max Tegmark;N. Thyagarajan;S. Tingay;C. Trott;M. Walker;R. Wayth;R. Webster;A. Williams;C. Wu;S. Wyithe

Science with the Murchison Widefield Array: Phase I results and Phase II opportunities

• DOI: 10.1017/pasa.2019.41
• 发表时间: 2019-10
• 期刊: Publications of the Astronomical Society of Australia
• 影响因子: 6.3
• 作者: A. Beardsley;M. Johnston-Hollitt;C. Trott;J. Pober;J. F. Morgan;D. Oberoi;D. Kaplan;C. Lynch;G. Anderson;P. McCauley;S. Croft;C. James;O. I. Wong;C. Tremblay;R. Norris;I. Cairns;C. Lonsdale;P. Hancock;B. Gaensler;N. Bhat;W. Li;N. Hurley-Walker;J. Callingham;N. Seymour;S. Yoshiura;R. Joseph;Keitaro Takahashi;M. Sokołowski;J. Miller-Jones;J. Chauhan;I. Bojičić;M. Filipović;D. Leahy;H. Su;W. Tian;S. McSweeney;B. W. Meyers;S. Kitaeff;T. Vernstrom;G. Gürkan;G. Heald;M. Xue;C. Riseley;S. Duchesne;J. Bowman;D. Jacobs;B. Crosse;D. Emrich;T. Franzen;L. Horsley;D. Kenney;M. Morales;D. Pallot;K. Steele;S. Tingay;M. Walker;R. Wayth;A. Williams;Chen Wu

Understanding the diversity of 21 cm cosmology analyses

了解 21 厘米宇宙学分析的多样性

• DOI: 10.1093/mnras/sty2844
• 发表时间: 2018
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Morales, Miguel F;Beardsley, Adam;Pober, Jonathan;Barry, Nichole;Hazelton, Bryna;Jacobs, Daniel;Sullivan, Ian
• 通讯作者: Sullivan, Ian

Fundamental Limitations on the Calibration of Redundant 21 cm Cosmology Instruments and Implications for HERA and the SKA

• DOI: 10.3847/1538-4357/ab107d
• 发表时间: 2018-11
• 期刊: The Astrophysical Journal
• 作者: R. Byrne;M. Morales;B. Hazelton;Wenyang Li;N. Barry;A. Beardsley;R. Joseph;J. Pober;I. Sullivan;C. Trott

A real-time, all-sky, high time resolution, direct imager for the long wavelength array

• DOI: 10.1093/mnras/stz1206
• 发表时间: 2019-04
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: J. Kent;J. Dowell;A. Beardsley;N. Thyagarajan;G. Taylor;J. Bowman