Probing New Physics in Galaxy Formation at Ultra-High Resolution

以超高分辨率探索星系形成的新物理

• 批准号: 1713353
• 负责人: Philip Hopkins
• 金额: $ 2.01万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-06-01 至 2019-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1713353&HistoricalAwards=false
• 关键词: Probing; New; Physics; Galaxy; Formation

A wealth of exciting new observational projects promise to revolutionize our understanding of galaxy and star formation: from the LSST and Gaia measuring Milky Way stellar populations in game-changing detail, to the James Webb Space Telescope probing galaxies during cosmic "first light", while the Hubble telescope identifies the long-"missing" mass in the medium around galaxies. This project intends to run large-scale cosmological hydrodynamic simulations on Blue Waters to make detailed predictions and leverage these transformative observations. The simulations will support the Feedback In Realistic Environments (FIRE) project, a network of theorists at 13 institutions, including several NSF postdoctoral and graduate student fellows: this collaboration has developed new, fully-cosmological simulations of galaxy formation that explicitly follow a diverse range of physics. This project will carry out novel studies of galaxy formation by running cosmological simulations on Blue Waters with unprecedented resolution and physics. The project run a large suite of cosmological simulations, targeting galaxies from the faintest dwarfs through the Milky Way, at the ultra-high resolution and realism required to leverage the next-generation of observations. The petascale resources of Blue Waters will allow the project to resolve each galaxy with ~1 billion particles and follow them self-consistently over their entire history in live cosmological settings. These simulations will model the physics of galaxy formation with unprecedented realism, uniquely incorporating not only all of the important stellar feedback mechanisms (radiation pressure, photo-heating, stellar winds, supernovae), but also magnetic fields, physical (anisotropic) Braginskii conduction and viscosity, passive scalar (metal) diffusion, and explicit, multi-wavelength radiation hydrodynamics. This represents the culmination of several years of work supported by NSF, and will be critical to enable the science of the FIRE project. The project will support an outreach component involving high school students and teachers, and undergraduate students, as well as a large science team using these simulations. The simulations will be used to make predictions specifically for next-generation observatories including (but not limited to): JWST, LSST, Gaia, and HST, in order to test theories of galaxy and star formation, constrain the origin of the heavy elements in the Universe, the re-ionization history of the early Universe, the effects of fundamental plasma physics in the circum and inter-galactic medium, and the nature of cold dark matter.

大量令人兴奋的新观测项目有望彻底改变我们对星系和星星形成的理解：从LSST和盖亚测量银河系恒星数量的游戏规则改变细节，到詹姆斯韦伯太空望远镜在宇宙“第一次光”期间探测星系，而哈勃望远镜确定了星系周围介质中长期“失踪”的质量。 该项目旨在对Blue沃茨进行大规模宇宙流体动力学模拟，以进行详细的预测并利用这些变革性的观测结果。这些模拟将支持现实环境反馈（FIRE）项目，这是一个由13个机构的理论家组成的网络，其中包括一些NSF博士后和研究生研究员：这项合作开发了新的完全宇宙学的星系形成模拟，明确遵循各种物理学。该项目将通过在Blue沃茨上进行宇宙学模拟，以前所未有的分辨率和物理学对星系形成进行新的研究。该项目运行了一套大型的宇宙学模拟，目标是从最微弱的矮星到银河系的星系，具有利用下一代观测所需的超高分辨率和现实主义。Blue沃茨的千万亿次资源将使该项目能够用~ 10亿个粒子解析每个星系，并在实时宇宙学设置中自洽地跟踪它们的整个历史。这些模拟将以前所未有的现实主义模拟星系形成的物理学，不仅独特地结合了所有重要的恒星反馈机制（辐射压力，光加热，恒星风，超新星），而且还结合了磁场，物理（各向异性）Braginskii传导和粘度，被动标量（金属）扩散，以及明确的多波长辐射流体动力学。这代表了NSF支持的几年工作的高潮，对于FIRE项目的科学至关重要。 该项目将支持一个涉及高中学生和教师、本科生以及使用这些模拟的大型科学团队的外展部分。这些模拟将用于专门为下一代天文台做出预测，（但不限于）：JWST，LSST，Gaia和HST，为了检验星系和星星形成理论，约束宇宙中重元素的起源，早期宇宙的再电离历史，环和星系间介质中基本等离子体物理的影响，以及冷暗物质的本质

项目成果

Effects of the environment and feedback physics on the initial mass function of stars in the STARFORGE simulations

STARFORGE 模拟中环境和反馈物理对恒星初始质量函数的影响

• DOI: 10.1093/mnras/stac2060
• 发表时间: 2022
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Guszejnov, Dávid;Grudić, Michael Y.;Offner, Stella S. R.;Faucher-Giguère, Claude-André;Hopkins, Philip F.;Rosen, Anna L.
• 通讯作者: Rosen, Anna L.

A new discrete dynamical friction estimator based on N -body simulations

一种基于N体模拟的新型离散动摩擦估计器

• DOI: 10.1093/mnras/stad036
• 发表时间: 2023
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Ma, Linhao;Hopkins, Philip F;Kelley, Luke Zoltan;Faucher-Giguère, Claude-André
• 通讯作者: Faucher-Giguère, Claude-André

A simple non-equilibrium feedback model for galaxy-scale star formation: delayed feedback and SFR scatter

星系级恒星形成的简单非平衡反馈模型：延迟反馈和恒星形成率散射

• DOI: 10.1093/mnras/stz1156
• 发表时间: 2019
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Orr, Matthew E;Hayward, Christopher C;Hopkins, Philip F
• 通讯作者: Hopkins, Philip F

Non-linear evolution of instabilities between dust and sound waves

尘埃和声波之间不稳定性的非线性演化

• DOI: 10.1093/mnras/stz2128
• 发表时间: 2019
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Moseley, Eric R;Squire, Jonathan;Hopkins, Philip F
• 通讯作者: Hopkins, Philip F

Local positive feedback in the overall negative: the impact of quasar winds on star formation in the FIRE cosmological simulations

整体负反馈中的局部正反馈：FIRE宇宙学模拟中类星体风对恒星形成的影响

• DOI: 10.1093/mnras/stad2079
• 发表时间: 2023
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Mercedes-Feliz, Jonathan;Anglés-Alcázar, Daniel;Hayward, Christopher C.;Cochrane, Rachel K.;Terrazas, Bryan A.;Wellons, Sarah;Richings, Alexander J.;Faucher-Giguère, Claude-André;Moreno, Jorge;Su, Kung Yi
• 通讯作者: Su, Kung Yi