Seeing Dark Matter with Weak Gravitational Lensing

用弱引力透镜观察暗物质

基本信息

  • 批准号:
    RGPIN-2019-04265
  • 负责人:
  • 金额:
    $ 2.99万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2021
  • 资助国家:
    加拿大
  • 起止时间:
    2021-01-01 至 2022-12-31
  • 项目状态:
    已结题

项目摘要

Dark matter (DM) is the dominant form of matter in the Universe, yet it remains poorly understood empirically due to the difficulty in directly measuring its properties. An understanding of DM and its link to visible matter is also critical for disentangling the puzzles of galaxy formation, since DM forms the structural framework of halos and filaments within which the visible parts of galaxies form and evolve. Weak gravitational lensing (WL) has emerged as one of the most promising ways to measure the quantity and spatial distribution of dark matter. The Canada-France Imaging Survey (CFIS) has exceptional power (due to its overlap with the Sloan Digital Sky Survey) for science that combines WL with galaxy spectroscopic redshifts. This combination of WL and spectroscopy is unique in the international context and allows studies of dark matter that no other survey can achieve. I am the Lead Scientist of the r-band (WL) component of CFIS, and lead of the international CFIS WL team. This proposal has two primary scientific objectives. The first objective is to map and characterize the fine details of dark matter structure in haloes and filaments. To meet these goals, my group will use CFIS data to study the dark matter structures in previously unexplored regimes of density or environment: (1) in between galaxies, in the form of filaments of the cosmic web; (2) in tidally stripped halos of satellites (3) the shapes of dark matter haloes and their connection to the large-scale environment. The second objective is to test General Relativity (GR) and the cosmological model on large scales. My group will compare the deflection of light with the infall of galaxies into structures: by combining CFIS WL with SDSS redshift data, we will perform the most stringent test to date. We will measure the relationship between matter and galaxies and gravity on the largest scales and in the nearby Universe through comparisons of large-scale structure and peculiar velocities. WL is the driver behind several billion dollar scale projects (the Euclid satellite, the Large Synoptic Survey Telescope), which promise orders of magnitude increases in lensing power when they begin in the early-to-mid 2020s. The experience gained through CFIS will put my group in an exceptional position to exploit these new surveys in this new golden age of weak gravitational lensing.
暗物质(DM)是宇宙中物质的主要形式,但由于难以直接测量其性质,因此对它的经验了解甚少。对DM及其与可见物质的联系的理解对于解开星系形成的谜团也至关重要,因为DM形成了星系可见部分形成和演化的晕和细丝的结构框架。 弱引力透镜(WL)已经成为测量暗物质数量和空间分布的最有前途的方法之一。加拿大-法国成像巡天(CFIS)具有特殊的力量(由于它与斯隆数字巡天重叠),用于将WL与星系光谱红移相结合的科学。WL和光谱学的这种结合在国际范围内是独一无二的,并允许研究暗物质,没有其他调查可以实现。我是CFIS R波段(WL)组件的首席科学家,也是CFIS WL国际团队的负责人。这项建议有两个主要的科学目标。第一个目标是绘制和表征晕和暗丝中暗物质结构的细节。为了实现这些目标,我的团队将使用CFIS数据来研究以前未探索的密度或环境制度中的暗物质结构:(1)在星系之间,以宇宙网的细丝形式;(2)在潮汐剥离的卫星晕中;(3)暗物质晕的形状及其与大尺度环境的联系。第二个目标是在大尺度上检验广义相对论和宇宙学模型。我的团队将比较光的偏转与星系的结构:通过结合CFIS WL和SDSS红移数据,我们将进行迄今为止最严格的测试。我们将通过大尺度结构和奇特速度的比较,在最大尺度上和附近的宇宙中测量物质与星系和引力之间的关系。 WL是数十亿美元规模项目(欧几里得卫星,大型综合巡天望远镜)的驱动力,这些项目承诺在20世纪20年代初至中期开始时,透镜功率将增加几个数量级。通过CFIS获得的经验将使我的团队处于一个特殊的位置,在弱引力透镜的新黄金时代利用这些新的调查。

项目成果

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Hudson, Michael其他文献

Behavioral Factors and Hospital Admissions/Readmissions in Patients With CHF
  • DOI:
    10.1016/j.psym.2013.06.019
  • 发表时间:
    2014-01-01
  • 期刊:
  • 影响因子:
    3.4
  • 作者:
    Ketterer, Mark W.;Draus, Cathy;Hudson, Michael
  • 通讯作者:
    Hudson, Michael
Finance Capitalism versus Industrial Capitalism: The Rentier Resurgence and Takeover
Finance Is Not the Economy: Reviving the Conceptual Distinction
  • DOI:
    10.1080/00213624.2016.1210384
  • 发表时间:
    2016-09-01
  • 期刊:
  • 影响因子:
    0.7
  • 作者:
    Bezemer, Dirk;Hudson, Michael
  • 通讯作者:
    Hudson, Michael
A rare find on point-of-care ultrasound.
Anticipatory prescribing in terminal care at home: what challenges do community health professionals encounter?
  • DOI:
    10.1136/bmjspcare-2012-000193
  • 发表时间:
    2013-03-01
  • 期刊:
  • 影响因子:
    2.7
  • 作者:
    Faull, Christina;Windridge, Kate;Hudson, Michael
  • 通讯作者:
    Hudson, Michael

Hudson, Michael的其他文献

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{{ truncateString('Hudson, Michael', 18)}}的其他基金

Seeing Dark Matter with Weak Gravitational Lensing
用弱引力透镜观察暗物质
  • 批准号:
    RGPIN-2019-04265
  • 财政年份:
    2022
  • 资助金额:
    $ 2.99万
  • 项目类别:
    Discovery Grants Program - Individual
Seeing Dark Matter with Weak Gravitational Lensing
用弱引力透镜观察暗物质
  • 批准号:
    RGPIN-2019-04265
  • 财政年份:
    2020
  • 资助金额:
    $ 2.99万
  • 项目类别:
    Discovery Grants Program - Individual
Seeing Dark Matter with Weak Gravitational Lensing
用弱引力透镜观察暗物质
  • 批准号:
    RGPIN-2019-04265
  • 财政年份:
    2019
  • 资助金额:
    $ 2.99万
  • 项目类别:
    Discovery Grants Program - Individual
The Distribution and Evolution of Dark and Luminous Matter in the Universe
宇宙中暗物质和发光物质的分布和演化
  • 批准号:
    RGPIN-2014-06481
  • 财政年份:
    2018
  • 资助金额:
    $ 2.99万
  • 项目类别:
    Discovery Grants Program - Individual
The Distribution and Evolution of Dark and Luminous Matter in the Universe
宇宙中暗物质和发光物质的分布和演化
  • 批准号:
    RGPIN-2014-06481
  • 财政年份:
    2017
  • 资助金额:
    $ 2.99万
  • 项目类别:
    Discovery Grants Program - Individual
The Distribution and Evolution of Dark and Luminous Matter in the Universe
宇宙中暗物质和发光物质的分布和演化
  • 批准号:
    RGPIN-2014-06481
  • 财政年份:
    2016
  • 资助金额:
    $ 2.99万
  • 项目类别:
    Discovery Grants Program - Individual
The Distribution and Evolution of Dark and Luminous Matter in the Universe
宇宙中暗物质和发光物质的分布和演化
  • 批准号:
    RGPIN-2014-06481
  • 财政年份:
    2015
  • 资助金额:
    $ 2.99万
  • 项目类别:
    Discovery Grants Program - Individual
The Distribution and Evolution of Dark and Luminous Matter in the Universe
宇宙中暗物质和发光物质的分布和演化
  • 批准号:
    RGPIN-2014-06481
  • 财政年份:
    2014
  • 资助金额:
    $ 2.99万
  • 项目类别:
    Discovery Grants Program - Individual
Galaxy evolution in the cosmological context
宇宙学背景下的星系演化
  • 批准号:
    227421-2009
  • 财政年份:
    2013
  • 资助金额:
    $ 2.99万
  • 项目类别:
    Discovery Grants Program - Individual
Galaxy evolution in the cosmological context
宇宙学背景下的星系演化
  • 批准号:
    227421-2009
  • 财政年份:
    2012
  • 资助金额:
    $ 2.99万
  • 项目类别:
    Discovery Grants Program - Individual

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  • 批准号:
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