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Both simulation and observational data have shown that the spin and shape of dark matter halos are correlated with their nearby large-scale environment. As structure formation on different scales is strongly coupled, it is trick to…

宇宙学与河外天体物理 · 物理学 2021-10-27 Hou-Zun Chen , Xi Kang , Peng Wang , Noam I. Libeskind , Yu Luo

Both simulations and observations have found that the spin of halo/galaxy is correlated with the large scale environment, and particularly the spin of halo flips in filament. A consistent picture of halo spin evolution in different…

宇宙学与河外天体物理 · 物理学 2017-04-19 Peng Wang , Xi Kang

Leveraging the semi-analytic method, we compute halo spins for a substantial sample of HI-bearing galaxies observed in the Arecibo Legacy Fast Alfa Survey. Our statistical analysis reveals a correlation between halo spin and environment,…

星系天体物理 · 物理学 2025-03-10 Zichen Hua , Yu Rong , Huijie Hu

In this paper we use high-resolution cosmological simulations to study halo intrinsic alignment and its dependence on mass, formation time and large-scale environment. In agreement with previous studies using N-body simulations, it is found…

宇宙学与河外天体物理 · 物理学 2017-10-18 Qianli Xia , Xi Kang , Peng Wang , Yu Luo , Xiaohu Yang , Yipeng Jing , Huiyuan Wang , Houjun Mo

We investigate how statistical anisotropy (SA) in matter distributions affects the distributions of shapes and orientations of cluster-sized halos, using cosmological $N$-body simulations that incorporate SA. While the three-dimensional…

宇宙学与河外天体物理 · 物理学 2025-12-10 Shogo Masaki , Yurino Mizuguchi , Shohei Saga , Shuichiro Yokoyama

We use seven high-resolution $N$-body simulations to study the correlations among different halo properties (assembly time, spin, shape and substructure), and how these halo properties are correlated with the large-scale environment in…

宇宙学与河外天体物理 · 物理学 2015-05-19 Huiyuan Wang , H. J. Mo , Y. P. Jing , Xiaohu Yang , Yu Wang

Context. The clustering of dark-matter halos depends primarily on halo mass. However, at fixed halo mass, numerical simulations have revealed multiple secondary dependencies. This so-called secondary halo bias has important implications for…

星系天体物理 · 物理学 2025-08-13 Yigon Kim , Antonio D. Montero-Dorta , Rory Smith , Jong-Ho Shinn

Different properties of dark matter haloes, including growth rate, concentration, interaction history, and spin, correlate with environment in unique, scale-dependent ways. While these halo properties are not directly observable, galaxies…

星系天体物理 · 物理学 2022-01-24 Peter Behroozi , Andrew Hearin , Benjamin P. Moster

We investigate the spin evolution of dark matter haloes and their dependence on the number of connected filaments from the cosmic web at high redshift (spin-filament relation hereafter). To this purpose, we have simulated $5000$ haloes in…

宇宙学与河外天体物理 · 物理学 2019-04-15 Roberto E. Gonzalez , Joaquin Prieto , Nelson Padilla , Raul Jimenez

Observations indicate that central galaxies show a significant alignment of their main shape axes with other galaxies in their group, as well as with the large-scale structure of the universe. Simulations have corroborated this finding,…

We study the role of the local tidal environment in determining the assembly bias of dark matter haloes. Previous results suggest that the anisotropy of a halo's environment (i.e, whether it lies in a filament or in a more isotropic region)…

宇宙学与河外天体物理 · 物理学 2018-03-14 Aseem Paranjape , Oliver Hahn , Ravi K. Sheth

Using the integral field unit data from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, we build a sample of gas-star misaligned galaxies. The large-scale environment of misaligned galaxies is dominated by filaments…

星系天体物理 · 物理学 2025-03-05 Min Bao , Yanmei Chen , Qiusheng Gu , Huiyuan Wang , Yong Shi , Peng Wang

We use N-body simulations to investigate the evolution of the orientation and magnitude of dark matter halo angular momentum within the large scale structure since z=3. We look at the evolution of the alignment of halo spins with filaments…

宇宙学与河外天体物理 · 物理学 2015-03-20 Holly E. Trowland , Geraint F. Lewis , Joss Bland-Hawthorn

We use a high-resolution N-body simulation to study how the influence of large-scale structure in and around clusters causes correlated signals in different physical probes and discuss some implications this has for multi-physics probes of…

宇宙学与河外天体物理 · 物理学 2015-05-19 Martin White , J. D. Cohn , Renske Smit

We develop a novel approach in exploring the joint dependence of halo bias on multiple halo properties using Gaussian process regression. Using a $\Lambda$CDM $N$-body simulation, we carry out a comprehensive study of the joint bias…

宇宙学与河外天体物理 · 物理学 2018-10-31 Jiaxin Han , Yin Li , Yipeng Jing , Takahiro Nishimichi , Wenting Wang , Chunyan Jiang

We estimate halo spins for HI-rich galaxies in the Arecibo Legacy Fast Alfa Survey using a semi-analytic approach, examining the relationship between halo spin and stellar surface density. Our findings reveal an inverse correlation in both…

星系天体物理 · 物理学 2024-11-28 Yu Rong , Zichen Hua , Huijie Hu

We study the spin alignment of galaxies and halos with respect to filaments and walls of the cosmic web, identified with DisPerSE, using the SIMBA simulation from z=0-2. Massive halos' spins are oriented perpendicularly to their closest…

星系天体物理 · 物理学 2020-02-05 Katarina Kraljic , Romeel Dave , Christophe Pichon

The halo spin flip refers to the phenomenon that the spin axes of dark matter halos with masses above a certain threshold tend to be preferentially aligned perpendicular to the hosting large-scale filaments, while low-mass halos tend to…

宇宙学与河外天体物理 · 物理学 2020-08-05 Jounghun Lee , Noam I Libeskind , Suho Ryu

Using the SIMBA, EAGLE, and IllustrisTNG-100 galaxy formation simulations, we examine the anisotropy of the satellite distribution and its dependencies on central galaxies, host halos, and cosmic filaments. We find that in all simulations…

星系天体物理 · 物理学 2026-05-01 Zhuoming Zhang , Weiguang Cui , Yun Chen , Romeel Davé , Katarina Kraljic

Anisotropy properties -- halo spin, shape, position offset, velocity offset, and orientation -- are an important family of dark matter halo properties that indicate the level of directional variation of the internal structures of haloes.…

宇宙学与河外天体物理 · 物理学 2023-11-16 Kuan Wang , Philip Mansfield , Dhayaa Anbajagane , Camille Avestruz
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