Yun Liu

ORCID: 0000-0002-9578-5124
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About
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Research Areas
  • Galaxies: Formation, Evolution, Phenomena
  • Astronomy and Astrophysical Research
  • Cosmology and Gravitation Theories
  • Astro and Planetary Science
  • Planetary Science and Exploration
  • Scientific Research and Discoveries
  • Dark Matter and Cosmic Phenomena
  • Stellar, planetary, and galactic studies
  • Geology and Paleoclimatology Research
  • Astronomical Observations and Instrumentation
  • Gamma-ray bursts and supernovae
  • Space Exploration and Technology
  • Biofield Effects and Biophysics
  • Time Series Analysis and Forecasting
  • Economic Growth and Productivity
  • Methane Hydrates and Related Phenomena
  • Advanced Mathematical Theories and Applications
  • Statistical and numerical algorithms
  • Laser-Plasma Interactions and Diagnostics
  • Autophagy in Disease and Therapy
  • Microwave Engineering and Waveguides
  • Pulsars and Gravitational Waves Research
  • Innovation Diffusion and Forecasting
  • Advanced MEMS and NEMS Technologies
  • Economic and Technological Innovation

National Astronomical Observatories
2023-2025

Chinese Academy of Sciences
2016-2025

University of Chinese Academy of Sciences
2023-2025

Astronomy and Space
2025

Beijing Botanical Garden
2023

China National Botanical Garden
2023

Institute of Botany
2023

Chengdu University of Technology
2020-2023

Institute of Geochemistry
2020-2023

Westlake University
2023

Convolutional Neutral Networks have been successfully applied in searching for strong lensing systems, leading to discoveries of new candidates from large surveys. On the other hand, systematic investigations about their robustness are still lacking. In this paper, we first construct a neutral network, and apply it $r$-band images Luminous Red Galaxies (LRGs) Kilo Degree Survey (KiDS) Data Release 3 search systems. We build two sets training samples, one fully simulations, using LRG stamps...

10.1093/mnras/staa1917 article EN Monthly Notices of the Royal Astronomical Society 2020-07-03

The interacting dark energy (IDE) model, which considers the interaction between and matter, provides a natural mechanism to alleviate coincidence problem can also relieve observational tensions under $\Lambda$CDM model. Previous studies have put constraints on IDE models by observations of cosmic expansion history, microwave background large-scale structures. However, these data are not yet enough distinguish from effectively. Because non-linear structure formation contains rich...

10.1093/mnras/stac229 article EN Monthly Notices of the Royal Astronomical Society 2022-01-25

Abstract Cosmic void has been proven to be an effective cosmological probe of the large-scale structure (LSS). However, since voids are usually identified in spectroscopic galaxy surveys, they generally limited low number density and redshift. We propose utilize clustering two-dimensional (2D) using Voronoi tessellation watershed algorithm without any shape assumption explore LSS. generate mock catalogs for next-generation Stage IV photometric surveys z = 0.8 − 2.0 from simulations, develop...

10.1093/mnras/staf305 article EN cc-by Monthly Notices of the Royal Astronomical Society 2025-02-20

Many nanomaterials are reported to disrupt lysosomal function and homeostasis, but how cells sense then respond nanomaterial-elicited lysosome stress is poorly understood. Nucleus translocation of transcription factor EB (TFEB) plays critical roles in biogenesis following induced by starvation. The authors previously massive cellular vacuolization, along with autophagy induction, treated rare earth oxide (REO) nanoparticles. Here, the identify these giant vacuoles as abnormally enlarged...

10.1002/smll.201601903 article EN Small 2016-09-04

ABSTRACT Void size function (VSF) contains the information of cosmic large-scale structure (LSS), and can be used to derive properties dark energy matter. We predict VSFs measured from spectroscopic galaxy survey operated by China’s Space Survey Telescope (CSST), study strength cosmological constraint. employ a high-resolution Jiutian simulation get CSST mock samples based on an improved semi-analytical model. identify voids this catalogue using watershed algorithm without assuming spherical...

10.1093/mnras/stae1575 article EN cc-by Monthly Notices of the Royal Astronomical Society 2024-06-25

ABSTRACT We present high-resolution maps of the dust reddening in Magellanic Clouds (MCs). The cover Large and Small Cloud (LMC SMC) area have a spatial angular resolution between ∼26 arcsec 55 arcmin. Based on data from optical near-infrared (IR) photometric surveys, including Gaia Survey, SkyMapper Southern Survey (SMSS), Stellar History (SMASH), Two Micron All Sky (2MASS), near-IR YJKS VISTA survey system (VMC), we obtained multiband stellar samples containing over 6 million stars LMC SMC...

10.1093/mnras/stac072 article EN Monthly Notices of the Royal Astronomical Society 2022-01-11

ABSTRACT The interacting dark energy (IDE) model is a promising alternative cosmological that has the potential to solve fine-tuning and coincidence problems by considering interaction between matter energy. Previous studies have shown exchange sector components in this can significantly affect halo properties. In study, utilizing large set of N-body simulations, we analyse redshift evolution concentration–mass (c–M) relation IDE model, show c–M sensitive proxy strength parameter ξ2,...

10.1093/mnras/stad1814 article EN Monthly Notices of the Royal Astronomical Society 2023-06-19

Due to intensified human pressure and climate change, ex situ conservation measures have become essential for conserving Earth's remaining biodiversity, but the development of targeted strategies based on gaps analysis is often a major challenge. Here, we used dated phylogeny including 95.70 % Chinese vascular genera 1,540,695 species distribution records identify in tree life geographic space China. We found that at least 41.70 (12,716 species) all plant (30,494 species), 49.31 (1715...

10.1016/j.biocon.2023.110044 article EN cc-by Biological Conservation 2023-04-04

ABSTRACT Void number count (VNC) indicates the of low-density regions in large-scale structure (LSS) Universe, and we propose to use it as an effective cosmological probe. By generating galaxy mock catalogue based on Jiutian simulations considering spectroscopic survey strategy instrumental design China Space Station Telescope (CSST), which can reach a magnitude limit $\sim$23 AB mag spectral resolution $R\gtrsim 200$ with sky coverage 17 500 deg2, identify voids using watershed algorithm...

10.1093/mnras/stae2094 article EN cc-by Monthly Notices of the Royal Astronomical Society 2024-09-09

We explore the joint weak lensing and galaxy clustering analysis from photometric survey operated by China Space Station Telescope (CSST), study strength of cosmological constraints. employ a high-resolution JiuTian-1G simulation to construct partial-sky light cone $z=3$ covering 100 deg$^2$, obtain CSST mock samples based on an improved semi-analytical model. perform multi-lens-plane algorithm generate corresponding synthetic maps catalogs. Then we data these catalogs considering...

10.48550/arxiv.2410.19388 preprint EN arXiv (Cornell University) 2024-10-25

The void power spectrum is related to the clustering of low-density regions in large-scale structure (LSS) Universe, and can be used as an effective cosmological probe extract information LSS. We generate galaxy mock catalogs from Jiutian simulation, identify voids using watershed algorithm for studying constraint strength China Space Station Telescope (CSST) spectroscopic survey. auto spectra void-galaxy cross at $z=0.3$, 0.6, 0.9 are derived catalogs. To fit full spectra, we propose use...

10.48550/arxiv.2408.08589 preprint EN arXiv (Cornell University) 2024-08-16

Cosmic void has been proven to be an effective cosmological probe of the large-scale structure (LSS). However, since voids are usually identified in spectroscopic galaxy surveys, they generally limited low number density and redshift. We propose utilize clustering two-dimensional (2D) using Voronoi tessellation watershed algorithm without any shape assumption explore LSS. generate mock catalogs for next-generation Stage IV photometric surveys $z = 0.8-2.0$ from simulations, develop 2D...

10.48550/arxiv.2410.04898 preprint EN arXiv (Cornell University) 2024-10-07

Void number counts (VNC) indicates the of low-density regions in large-scale structure (LSS) Universe, and we propose to use it as an effective cosmological probe. By generating galaxy mock catalog based on Jiutian simulations considering spectroscopic survey strategy instrumental design China Space Station Telescope (CSST), which can reach a magnitude limit $\sim$23 AB mag spectral resolution $R\gtrsim200$ with sky coverage 17,500 deg$^2$, identify voids using watershed algorithm without...

10.48550/arxiv.2409.03178 preprint EN arXiv (Cornell University) 2024-09-04

Abstract The void power spectrum is related to the clustering of low-density regions in large-scale structure (LSS) Universe and can be used as an effective cosmological probe extract information on LSS. We generate galaxy mock catalogs from a Jiutian simulation identify voids using watershed algorithm for studying constraint strength China Space Station Telescope spectroscopic survey. autopower spectra void−galaxy cross-power at z = 0.3, 0.6, 0.9 are derived catalogs. To fit full spectra,...

10.3847/1538-4357/ad8de9 article EN cc-by The Astrophysical Journal 2024-11-27

Anisotropic stochastic gravitational wave background (SGWB) serves as a potential probe of the large-scale structure (LSS) universe. In this work, we explore anisotropic SGWB from local ($z < \sim 0.085$) merging stellar mass compact binaries, specifically focusing on binary black holes, neutron-star-black-hole and neutron stars. The analysis employs seven all-sky mock lightcone event catalogues, which are derived Millennium simulation combined with semi-analytic model galaxy formation...

10.48550/arxiv.2412.09956 preprint EN arXiv (Cornell University) 2024-12-13

冥古宙是地球历史的最初阶段,虽然仅持续不到六亿年,但在此期间发生巨大的物质运移和重新分布,地球的地核、地幔、地壳和大气层等主要圈层框架已基本形成,为地球后续漫长的物质和能量演变奠定了基础。由于关键地质记录缺失、研究手段匮乏等原因,当前地学界针对冥古宙地球演化的研究仍十分有限,使其成为地球科学最为薄弱的一环。鉴于冥古宙地球存在地质记录匮乏这一“痛点”,以及太阳系类地天体(泛指类地行星、矮行星、卫星和小行星等岩石质天体)在原始物质组成、内部结构、热演化和构造体制演变等方面的相似性,借助比较行星学手段,从太阳系内各类地天体(现今或早期)保存完好的地质记录研究类地天体演化的一般规律,以此弥补早期地球演化认识的空白。这是一种重要且可行的研究手段,也是突破现有地学理论框架(如板块构造理论)、开辟新的地学研究格局的重要契机。本文对早期地球的热演化、内部分异和构造体制等关键领域的研究进展及其存在的问题进行了梳理,同时探讨了未来可能的突破点。

10.1360/tb-2022-0176 article ZH-CN Chinese Science Bulletin (Chinese Version) 2022-03-30

10.18429/jacow-ipac2014-wepme002 article NO 5th Int. Particle Accelerator Conf. (IPAC'14), Dresden, Germany, June 15-20, 2014 2014-07-01

The unification of the four forces is ultimate goal physics. At present, humans have not really unified power and strong force, source force remains a mystery. In 2018, Liu Yun proposed new formula to accurately calculate static mass particles. Later, Ziyi assumed that particle was composed three charges with integer 1, believed particle's high rate spin produced force. According Coulomb's law relativity, he deduced for coefficient between particles Λc(2287), found decreases increase...

10.56028/aetr.4.1.132.2023 article EN Advances in Engineering Technology Research 2023-03-20

The knowledge of core-mantle separation is vital to understand the processes both before and after core formation, such as accretion, degassing mantle crystallization.Core-mantle likely be a multistage event at multiple depths, but it can modeled or interpreted with single-state scenario specific P, T fO 2 .The metal-silicate partitioning data moderately siderophile elements (Ni, Co, Mo, W, P also Re) suggests that Martian formation occurred 14±3 GPa 2100±200 K 1 .At PT conditions, oxygen...

10.7185/gold2023.17992 article EN Goldschmidt Abstracts 2023-01-01

The unique technical principals and superior performance make LED lighting achieve the disruption of traditional lighting. This paper conducts an analytical framework "technology-market-policy" to reveal internal mechanism key driving factors as a disruptive technology, from sprout science technology become new generation replacing By studying growth path China's industry excavating influencing important impetus in its process are enable us recognize characteristics incentives emerging...

10.23919/picmet.2018.8481818 article EN 2022 Portland International Conference on Management of Engineering and Technology (PICMET) 2018-08-01

The Earths core formation process has decisive effect in the chemical differentiation between and its mantle. Here, we propose a new model which is caused by special giant impact. This suggests that impactors can be kept intact own sticky mantle under appropriate impacting conditions let it merge into targets without contact with We call this impact mode as glue ball (GBI). By simulating hundreds of impacts sizes from planetesimals to planets, lead GBI have been found out. If small angle...

10.48550/arxiv.1901.00420 preprint EN other-oa arXiv (Cornell University) 2019-01-01

The interacting dark energy (IDE) model is a promising alternative cosmological which has the potential to solve fine-tuning and coincidence problems by considering interaction between matter energy. Previous studies have shown that exchange sectors in this can significantly affect halo properties. In study, utilising large set of $N$-body simulations, we analyse redshift evolution concentration - mass ($c$ $M$) relation IDE model, show $c$ $M$ sensitive proxy strength parameter $ξ_2$,...

10.48550/arxiv.2212.02050 preprint EN cc-by arXiv (Cornell University) 2022-01-01

This paper presents a design method of widening the circular polarized beam feed horn by using corrugated structure. Under premise no other circuit structure changes, polarization width 3 dB axial ratio is broadened from 25°x29° to 98.2°x99.5°, replacing conical in X-band with horn. There obvious deterioration return loss and directivity pattern improved

10.1109/radar53847.2021.10028194 article EN 2021 CIE International Conference on Radar (Radar) 2021-12-15
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