Dust in the Wind: Dynamics of Dusty Fluids on Interstellar, Stellar, and Planetary Scales

风中的尘埃：星际、恒星和行星尺度上的尘埃流体动力学

基本信息

批准号：
2009234
负责人：
Philip Hopkins
金额：
$ 43.3万
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：
2020
资助国家：
美国
起止时间：
2020-08-15 至 2024-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2009234&HistoricalAwards=false
关键词：
Dust Wind Dynamics Dusty Fluids

项目摘要

Dust grains are tiny particles, ranging from smog-like soots and microscopic sand-like grains to crystals, are of fundamental importance to almost all astrophysics. These grains contain a huge fraction of all the heavy elements in the Universe, and as such represent the "building blocks" that ultimately make up the planets and us. Astronomers have long known that dust is mixed with Hydrogen and Helium gas in the space between the planets, stars, and galaxies, but the dynamics of "dusty fluids" remain poorly understood. Understanding the interactions of dust grains is important models of "recycling" of material between stars and the gas between stars. To address these issues, the investigator will produce new, massively parallel, public computational codes. This software will also be applicable to more general engineering and turbulence/aerodynamic applications. The investigator plans summer research opportunities for undergraduates, high school students, and high school teachers. This work will also generate animations and visualizations for outreach programs, public talks, and planetarium shows. The investigator’s group has recently discovered previously unknown instabilities that can re-write much of the conventional wisdom about how dust grains change with time and alter the formation of planets and stars. Students will run computer simulations incorporating all the relevant processes to model these problems self-consistently and capture the behaviors of these instabilities. This is enabled by a new generation of massive computer codes the investigators have developed. These codes numerically solve the equations of fluid dynamics interacting with dust and magnetic fields and radiation. They will develop novel testable predictions for planetary disks, planet properties, variations of stars, and structure of the gas around stars This work should contribute fundamentally to our understanding how planets form, how stars change with time, and where stars and planets -- and our chemical building blocks -- come from.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.

项目成果

期刊论文数量（21）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

The impact of AGN-driven winds on physical and observable galaxy sizes

AGN 驱动的风对物理和可观测星系大小的影响

DOI：
10.1093/mnras/stad1528
发表时间：
2023
期刊：
Monthly Notices of the Royal Astronomical Society
影响因子：
4.8
作者：
Cochrane, R. K.;Anglés-Alcázar, D.;Mercedes-Feliz, J.;Hayward, C. C.;Faucher-Giguère, C-A;Wellons, S.;Terrazas, B. A.;Wetzel, A.;Hopkins, P. F.;Moreno, J.
通讯作者：
Moreno, J.

Standard self-confinement and extrinsic turbulence models for cosmic ray transport are fundamentally incompatible with observations

宇宙射线传输的标准自约束和外在湍流模型从根本上与观测不相容

DOI：
10.1093/mnras/stac2909
发表时间：
2022
期刊：
Monthly Notices of the Royal Astronomical Society
影响因子：
4.8
作者：
Hopkins, Philip F.;Squire, Jonathan;Butsky, Iryna S.;Ji, Suoqing
通讯作者：
Ji, Suoqing

The impact of astrophysical dust grains on the confinement of cosmic rays

DOI：
10.1093/mnras/stab179
发表时间：
2020-11
期刊：
Monthly Notices of the Royal Astronomical Society
影响因子：
4.8
作者：
J. Squire;P. Hopkins;E. Quataert;Philipp Kempski
通讯作者：
J. Squire;P. Hopkins;E. Quataert;Philipp Kempski

Dust in the wind with resonant drag instabilities – I. The dynamics of dust-driven outflows in GMCs and H ii regions

具有共振阻力不稳定性的风中的灰尘 I. GMC 和 H ii 区域中灰尘驱动的外流动态

DOI：
10.1093/mnras/stac1784
发表时间：
2022
期刊：
Monthly Notices of the Royal Astronomical Society
影响因子：
4.8
作者：
Hopkins, Philip F.;Rosen, Anna L.;Squire, Jonathan;Panopoulou, Georgia V.;Soliman, Nadine H.;Seligman, Darryl;Steinwandel, Ulrich P.
通讯作者：
Steinwandel, Ulrich P.

Numerical study of cosmic ray confinement through dust resonant drag instabilities

通过尘埃共振阻力不稳定性限制宇宙射线的数值研究