中文

XMM-Newton捕获的合并星系团Abell 85

天体物理学 2009-11-10 v1

摘要

我们的XMM-Newton观测确认了首次被ROSAT探测到的4 Mpc延伸纤维,X射线温度约为2 keV,可能由正在坠入星系团的星系团构成。将温度图与数值模拟进行比较显示,Abell 85过去曾经历剧烈的合并活动,中心区域也未完全放松。最后,我们计算了反投影温度轮廓,并结合面积亮度,用于估算熵和压力轮廓。Abell 85仅在中心出现轻微的熵值减缓,无明显的“熵底”(entropy floor)证据。

关键词

引用

@article{arxiv.astro-ph/0501214,
  title  = {The merging cluster Abell 85 caught between meals by XMM-Newton},
  author = {Florence Durret and Gastao B. Lima Neto and William Forman},
  journal= {arXiv preprint arXiv:astro-ph/0501214},
  year   = {2009}
}

备注

Contribution to the Proceedings of the COSPAR Scientific Assembly, E1.2 "Clusters of Galaxies: New Insights from XMM-Newton, Chandra and INTEGRAL", Paris (France), July 19-20, 2004, accepted for publication in Advances in Space Research