THE STRUCTURE OF THE LOCAL HOT BUBBLE
THE STRUCTURE OF THE LOCAL HOT BUBBLE
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局部热气泡的结构
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
B. Walsh
中科院分区：
文献类型：
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作者：
Wenhao Liu;M. Chiao;M. Collier;T. Cravens;M. Galeazzi;D. Koutroumpa;K. Kuntz;R. Lallement;S. Lepri;D. McCammon;K. Morgan;F. Porter;S. Snowden;N. Thomas;Y. Uprety;Y. Uprety;E. Ursino;E. Ursino;B. Walsh
来自本地星系的漫射x射线（DXL）是一项探空火箭任务，旨在量化和表征太阳风电荷交换（SWCX）对漫射x射线背景的贡献，并研究本地热泡（LHB）的性质。基于DXL任务的结果，我们量化并去除了SWCX对ROSAT全天巡天测量的漫射x射线背景的贡献。“清洗”后的地图被用来研究LHB的物理性质。假设热电离平衡，我们测得高度均匀的温度分布在kT = 0.097 keV±0.013 keV （FWHM）±0.006 keV（系统）附近。我们还生成了一张热发射测量图，并用它来表征LHB的三维（3D）结构，我们发现这与从尘埃和气体中测量到的局部空腔的结构非常吻合。
Diffuse X-rays from the Local Galaxy (DXL) is a sounding rocket mission designed to quantify and characterize the contribution of Solar Wind Charge eXchange (SWCX) to the Diffuse X-ray Background and study the properties of the Local Hot Bubble (LHB). Based on the results from the DXL mission, we quantified and removed the contribution of SWCX to the diffuse X-ray background measured by the ROSAT All Sky Survey. The “cleaned” maps were used to investigate the physical properties of the LHB. Assuming thermal ionization equilibrium, we measured a highly uniform temperature distributed around kT = 0.097 keV ± 0.013 keV (FWHM) ± 0.006 keV (systematic). We also generated a thermal emission measure map and used it to characterize the three-dimensional (3D) structure of the LHB, which we found to be in good agreement with the structure of the local cavity measured from dust and gas.