Sgr A East 及其周围环境的 X 射线观测
天体物理学
2009-11-10 v1
摘要
我们报告了 Sgr A East 及其周围环境的 XMM-Newton 观测结果。Sgr A East 的 X 射线光谱可用温度约为 1 和约 4 keV 的两温度等离子体模型良好地描述。仅铁元素丰度显示明显的空间变化；其浓度集中在 Sgr A East 的核心处。推导出的等离子体参数表明 Sgr A East 源于单次超新星爆炸。在 Sgr A East 周围，存在广泛的硬 X 射线辐射分布，叠加有一股向上和向下延伸至平面之外的软 X 射线成分。我们讨论了这些结构的性质以及其与 Sgr A* 紧密相邻的关系。
引用
@article{arxiv.astro-ph/0308373,
title = {Sgr A East and its surroundings observed in X-rays},
author = {Masaaki Sakano and Robert S. Warwick and Anne Decourchelle},
journal= {arXiv preprint arXiv:astro-ph/0308373},
year = {2009}
}
备注
7 pages, 3 figures, Accepted for publication in Advances in Space Research, as a proceeding paper for the 34th COSPAR E1.4 "High Energy Studies of Supernova Remnants and Neutron stars" held at Houston, Texas, USA during 10-19 Oct 2002; also found in http://www.star.le.ac.uk/~mas/research/paper/#Sakano2003cosp