Dark Matter Annihilation Feedback and Cosmic Structure Formation

暗物质湮灭反馈与宇宙结构形成

基本信息

批准号：
2108931
负责人：
Rongmon Bordoloi
金额：
$ 54.5万
依托单位：
North Carolina State University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-09-01 至 2024-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2108931&HistoricalAwards=false
关键词：
Dark Matter Annihilation Feedback Cosmic

项目摘要

Upcoming surveys of high-redshift galaxies and the neutral hydrogen from which they formed will offer an unprecedented glimpse into the epoch of Cosmic Dawn. These surveys offer an opportunity to discover, or at least constrain, new physical phenomena in a previously unexplored era in the history of the cosmos. This project takes advantage of this opportunity by demonstrating the potential for observations of Cosmic Dawn to be a uniquely effective probe of dark matter particle physics. While dark matter is broadly understood to be an essential element of our cosmic environment, its fundamental nature as a physical phenomenon is still not yet known. Modeling the high-redshift galaxy luminosity function and 21cm power spectrum will allow us to set new constraints on the properties of dark matter. To enhance the public impact of this project, the researchers will initiate a program of “video abstract” productions for students describing their published work for a non-technical audience. These video abstracts will be produced by the students themselves and will be posted on a dedicated public YouTube channel.This project will model the high-redshift galaxy luminosity function and 21cm power spectrum, two complementary probes of reionization-era astrophysics, to set new constraints on the properties of dark matter. The results will address the possibility, suggested by a wide range of theoretical models, that dark matter might self-annihilate in regions of high density. In the course of this project, novel semi-analytic and numerical codes to incorporate dark matter annihilation physics in galaxy formation and reionization will be published.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.

即将进行的高红移星系的调查以及它们形成的中性氢将为宇宙黎明时代提供前所未有的瞥见。这些调查提供了一个机会，可以在宇宙历史上以前出乎意料的擦除发现或至少限制新的物理现象。该项目通过证明观察到宇宙黎明的潜力是对暗物质粒子物理物理学的独特探针，利用了这一机会。尽管将暗物质广泛理解为我们宇宙环境的重要因素，但它作为物理现象的基本本质尚不清楚。建模高红移星系光度函数和21cm功率谱将使我们能够对暗物质的性质设置新约束。为了增强该项目的公共影响，研究人员将为学生为非技术受众的出版工作启动“视频摘要”作品计划。这些视频摘要将由学生本身制作，并将发布在专用的公共YouTube频道上。该项目将建模高红移星系光度功能和21cm Power Spectrum，这两个完整的Reionization-therother-Astrophysics问题是对暗物质属性的新约束。结果将解决由广泛的理论模型所表明的可能性，即暗物质可能在高密度区域内进行自然化。在该项目的过程中，将发布新颖的半分析和数值代码，以将暗物质歼灭物理学结合在银河形成和恢复中。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子优点和更广泛的影响审查标准来评估来通过评估来获得的支持。