中性氢研究的前沿问题

发布时间：2018-06-01 21:59

本文选题：星际介质 + 中性氢　；参考：《天文学进展》2011年04期

【摘要】：氢元素是宇宙中重子物质的一种主要成分。处于中性状态的原子氢(通常简称为中性氢)在宇宙中分布广泛,是恒星和星系的物质基础。中性氢是分子云中的一种重要成分。它在星系中的分布广泛而延展,是研究星系的物质分布、动力学以及暗物质性质很好的示踪物。中性氢的研究已经有较长的历史,随着射电望远镜灵敏度和角分辨率的提高,正在形成越来越多对中性氢的新认识。对中性氢的进一步研究对其他一些天体物理研究也有重要意义。概括中性氢研究的几个前沿问题,包括研究中性氢对软X射线观测的影响,用银河系中性氢的动力学模型限定天体距离,研究分子云中的中性氢成分,用中性氢研究星系的动力学和星系中的暗物质分布,用高分辨率的中性氢观测研究星系的相互作用以及用中性氢研究宇宙的大尺度结构。对不熟悉中性氢研究的研究者而言,这可以作为了解这个领域的一个参考。
[Abstract]:Hydrogen is a major component of baryon matter in the universe. Atomic hydrogen in a neutral state (commonly referred to as neutral hydrogen) is widely distributed in the universe and is the material basis of stars and galaxies. Neutral hydrogen is an important component in molecular clouds. It is widely distributed and extended in galaxies. It is a good tracer to study the distribution, dynamics and dark matter properties of galaxies. The research of neutral hydrogen has a long history. With the improvement of the sensitivity and angular resolution of radio telescope, more and more new understanding of neutral hydrogen is formed. Further studies of neutral hydrogen are also of great significance to other astrophysical studies. Several recent issues in the study of neutral hydrogen are summarized, including the study of the effect of neutral hydrogen on soft X-ray observations, the determination of the distance between celestial bodies by the kinetic model of neutral hydrogen in the Milky way, and the study of the composition of neutral hydrogen in molecular clouds. The dynamics of galaxies and the distribution of dark matter in galaxies are studied by neutral hydrogen, the interaction of galaxies is studied by high-resolution neutral hydrogen observation, and the large-scale structure of the universe is studied by neutral hydrogen. For researchers unfamiliar with neutral hydrogen research, this could serve as a reference for understanding the field.
【作者单位】：中国科学院国家天文台;
【基金】：国家自然科学基金(011241001,011231001) 中科院百人计划(934011001,034031001)
【分类号】：P152

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