搜索结果: 1-9 共查到“Substructure”相关记录9条 . 查询时间(0.046 秒)
Baryon dynamics, dark matter substructure, and galaxies
formation large-scale structure of universe
2014/12/23
By comparing a collisionless cosmological N-body simulation (DM) to a smoothed particle hydrodynamics simulation (SPH) with the same initial conditions, we investigate the correspondence between dark ...
The Effect of Local Dark Matter Substructure on Constraints in Sommerfeld-Enhanced Models
Effect Local Dark Matter Substructure Constraints Sommerfeld-Enhanced Models
2011/10/17
In models of dark matter with Sommerfeld-enhanced annihilation, where the annihilation rate scales as the inverse velocity, models of local substructure motivated by N-body dark matter simulations imp...
Mass segregation and fractal substructure in young massive clusters: (I) the McLuster code and method calibration
galaxies: star clusters: individual: R136 — galaxies: star formation —methods: data analysis — Magellanic Clouds
2011/10/8
By analysing models of the young massive cluster R136 in 30 Doradus, set-up using the herewith introduced and publicly made available code McLuster, we investigate and compare different methods for de...
Quantifying Kinematic Substructure in the Milky Way's Stellar Halo
Cosmology stellar halo galaxies individual(Milky Way) Galaxy halo Galaxy
2010/11/12
We present and analyze the positions, distances, and radial velocities for over 4000 blue horizontal-branch (BHB) stars in the Milky Way's halo, drawn from SDSS DR8. We search for position-velocity su...
Cosmography with cluster strong lenses: the influence of substructure and line-of-sight halos
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/22
We explore the use of strong lensing by galaxy clusters to constrain the dark energy equation of state and its possible time variation. The cores of massive clusters often contain several multiply ima...
Non-Linear Seismic Soil-Structure Interaction Analysis Based on the Substructure Method in the Time Domain
Seismic soil-structure interaction substructure formulation finite element method
2009/10/13
This paper presents an idealized 2-dimensional plain strain nite element seismic soil-structure interaction (SSI) analysis based on a substructure method by using original software developed by the a...
基于修正Craig-Bampton方法的轮胎动态子结构模型（Dynamic Substructure Tire Model Based on Modified Craig-Bampton Method）
轮胎 整车动力学模型 有限元法
2009/9/25
以轮胎模态试验获取的模态参数和参数化轮胎有限元模型为基础，通过优化方法使有限元模型的计算模态参数与试验模态参数一致，获得动力学等效的轮胎模型，将该模型视作连接车辆与地面的子结构，基于修正的Craig-Bampton方法和轮胎接地界面特性，得到轮胎子结构的主模态集和约束模态集，使用模态综合方法实现轮胎子结构模型与车辆多体动力学模型的耦合，此模型可广泛应用于车辆平顺性仿真和整车动态优化设计。
Confirmation of halo substructure using quest rr lyrae data：the new virgo stellar stream (VSS)
halo substructure virgo stellar rr lyrae data
2009/6/25
Confirmation of halo substructure using quest rr lyrae data：the new virgo stellar stream (VSS)。
Substructure and superstructure of four-layer Ca-exchanged birnessite
Substructure superstructure four-layer Ca-exchanged birnessite
2012/3/30
Synthetic Ca-exchanged birnessite (CaBi) was studied by X-ray and selected-area elec-tron diffraction (XRD, SAED). The substructure of CaBi may be described with a four-layer monoclinic subcell with a...