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相关概念视频

Detection of Black Holes01:10

Detection of Black Holes

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Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
Not until the 1960s, when the first neutron...
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相关实验视频

Updated: Jun 28, 2025

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
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长基线量子传感器网络作为暗物质光镜.

Min Jiang1,2,3, Taizhou Hong1,2,3, Dongdong Hu3,4

  • 1CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui, 230026, China.

Nature communications
|April 18, 2024
PubMed
概括

这项研究介绍了使用1700公里的原子磁力仪网络首次对暗光子暗物质的搜索. 该实验对暗光子暗物质动力混合系数设定了最严格的地球约束.

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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
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Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

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相关实验视频

Last Updated: Jun 28, 2025

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
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Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2

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Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
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科学领域:

  • * 粒子物理学 粒子物理学
  • * 天体物理学 * 天体物理学
  • * * 暗物质研究

背景情况:

  • * 超轻暗光子是暗物质的主要候选物质.
  • * 暗光子可以通过动力混合与标准模型光子配对,诱导电磁信号.
  • * 这些信号预计在暗光子的德布罗格利波长内与空间相关.

研究的目的:

  • * 进行首次对空间相关的暗光子信号的搜索.
  • * 为了限制暗光子暗物质的动力混合系数.
  • * 探索使用长基线原子磁力计网络探测暗物质.

主要方法:

  • * 部署了15个原子磁力计的长基线网络,跨越两个分开的,米尺度的屏蔽房间 (距离1700公里).
  • *利用网络的多个传感器和大屏幕尺寸来增强暗光子信号检测.
  • * 采用长基线测量来减轻当地的噪声源.

主要成果:

  • * 对暗光子暗物质的动力混合系数建立了最严格的地球约束.
  • *覆盖了从4.1 meV到2.1 peV的暗光子质量范围.
  • * 证明了用于暗物质搜索的大规模,屏蔽磁力计网络的有效性.

结论:

  • *该实验为暗光子暗物质特性提供了重要的新约束.
  • *未来的数据可能会超越来自宇宙微波背景和等离子体加热的天体物理约束.
  • *这种方法为陆地暗物质检测开辟了新的途径.