冷暗物质子结构的数值追踪及其湮灭辐射的观测

发布时间：2018-03-01 04:19

本文关键词： 冷暗物质子晕子结构宇宙学演化模型星系形成小扰动 galactic 吸积理论预期 　出处：《天文学报》2014年03期 　论文类型：期刊论文

【摘要】：正当前对宇宙的主要观测都指向物质成分为冷暗物质主导的~CDM宇宙学.在冷暗物质的宇宙中,原初的微小扰动在引力作用下增长为位力化的团块,称为暗物质晕.小质量暗晕最先形成,它们之间的相互并合形成了更大质量的暗晕.并合之后,前身暗晕在当前载晕中会以自束缚的子结构形式存活很长时间,称为子晕.在数值模拟中我们可以对子晕的形成和演化进行详细的研究.这种研究为星系形成演化模型提供了基础,同时也影响了我们观测上探测暗物质的方式.
[Abstract]:Just as previous observations of the universe have pointed to CDM cosmology, where the composition of matter is dominated by cold dark matter, in the universe of cold dark matter, the initial tiny perturbations grow under gravitational action into potentially energetic masses. Known as dark matter halos. Small mass halos are first formed, and the combination between them forms a larger mass dark halo. After the combination, the predecessor halos survive in the form of self-binding substructures for a long time in the current halo. In numerical simulation, we can study the formation and evolution of subhalos in detail, which provides the basis for the formation and evolution of galaxies, and also affects the way we observe dark matter.
【作者单位】：中国科学院上海天文台;
【分类号】：P145.9

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