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Dark Matter and Disk-Halo Interaction in the Milky Way

银河系中的暗物质和盘晕相互作用

基本信息

批准号：
1908653
负责人：
Heidi Newberg
金额：
$ 39.5万
依托单位：
Rensselaer Polytechnic Institute
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
起止时间：
2019-09-01 至 2024-02-29
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1908653&HistoricalAwards=false
关键词：
Dark Matter Disk Halo Interaction

项目摘要

When we look at the Universe, we see stars, planets, black holes, neutron stars, and the gas and dust between them. All of this is made from normal matter. Astronomers believe that for every pound of normal matter, there are five or six pounds of something called dark matter. We only know about dark matter by its gravitational attraction to the normal matter that we see. The investigators seek to discover where that dark matter is in our own Milky Way galaxy. If investigators can find spots were the stars in the Milky Way are jostled in predicted ways, they will learn how dark matter interacts with regular matter. To find the location of dark matter, the investigators will study the motions of stars from smaller galaxies that are falling into the Milky Way, and the motions in the Milky Way disk, which is the part of our galaxy that includes the spiral arms. These stars will be pulled towards the dark matter, which will make it possible for identify the dark matter location and concentration.In addition to providing researchers with constraints on dark matter in the Universe, the investigators will directly contribute to education at all levels. Graduate and undergraduate students will learn how to conduct research. They will connect with the public through open houses at the campus observatory, by helping to train high school students who will staff open houses at a local science museum, and by interacting with more than 15,000 people around the world who voluntarily contribute their computers to help the researchers do calculations.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.

当我们观察宇宙时，我们看到恒星、行星、黑洞、中子星以及它们之间的气体和尘埃。所有这些都是由正常物质组成的。天文学家认为，每一磅正常物质中，就有五六磅被称为暗物质的物质。我们只知道暗物质是通过它对我们所看到的正常物质的引力来了解的。研究人员试图发现暗物质在我们银河系中的位置。如果研究人员能够找到银河系中恒星以预测的方式相互挤压的地方，他们将了解暗物质如何与常规物质相互作用。为了找到暗物质的位置，研究人员将研究落入银河系的较小星系中的恒星的运动，以及银河系圆盘中的运动，银河系圆盘是我们星系的一部分，包括螺旋臂。这些恒星将被拉向暗物质，这将使确定暗物质的位置和浓度成为可能。除了为研究人员提供宇宙中暗物质的约束外，调查人员还将直接为各级教育做出贡献。研究生和本科生将学习如何进行研究。他们将通过校园天文台的开放日与公众联系，帮助培训将在当地科学博物馆工作的高中生，并与超过15个，该奖项反映了NSF的法定使命，并通过使用基金会的学术价值和更广泛的影响审查标准。

项目成果

期刊论文数量（11）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Element Abundance Analysis of the Metal-rich Stellar Halo and High-velocity Thick Disk in the Galaxy

DOI：
10.3847/1538-4357/abff52
发表时间：
2021-05
期刊：
The Astrophysical Journal
影响因子：
0
作者：
Haifan Zhu;C. Du;Yepeng Yan;Jian-rong Shi;Jun Ma;H. Newberg
通讯作者：
Haifan Zhu;C. Du;Yepeng Yan;Jian-rong Shi;Jun Ma;H. Newberg

Estimate of the Mass and Radial Profile of the Orphan–Chenab Stream's Dwarf-galaxy Progenitor Using MilkyWay@home

使用 MilkyWay@home 估计孤儿 - Chenab Stream 的矮星系祖星系的质量和径向剖面

DOI：
10.3847/1538-4357/ac498a
发表时间：
2022
期刊：
The Astrophysical Journal
影响因子：
0
作者：
Mendelsohn, Eric J.;Newberg, Heidi Jo;Shelton, Siddhartha;Widrow, Lawrence M.;Thompson, Jeffery M.;Grillmair, Carl J.
通讯作者：
Grillmair, Carl J.

Existence of the Metal-rich Stellar Halo and High-velocity Thick Disk in the Galaxy