THE NORTH GALACTIC POLE RIFT AND THE LOCAL HOT BUBBLE
THE NORTH GALACTIC POLE RIFT AND THE LOCAL HOT BUBBLE
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DOI：
10.1088/0004-637x/806/1/120
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发表时间：
2015-06
期刊：
影响因子：
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通讯作者：
S. Snowden;D. Koutroumpa;K. Kuntz;R. Lallement;L. Puspitarini
中科院分区：
文献类型：
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作者：
S. Snowden;D. Koutroumpa;K. Kuntz;R. Lallement;L. Puspitarini
北银河极裂谷（NGPR）是银河系高纬度地区少数几个具有明确距离的中性氢云之一。它位于局部空腔（LC）的边缘，并为理解局部热泡（LHB）提供了重要的测试案例，局部热泡是热扩散等离子体的假定位置，负责大部分观察到的1 / 4？> keV发射源自太阳附近。使用ROSAT全天巡天和普朗克红化图的数据，我们发现LC（LHB加上本地星际云复合体）内的路径长度为98 ± 27 pc，与NGPR的距离98 ± 6 pc非常吻合。此外，我们研究另外14个方向，分布在天空中的液晶墙显然是光学厚的14？>凯我们发现，在这些方向上的数据也是一致的LHB模型和均匀的发射率等离子体填充大部分的LC。
The North Galactic Pole Rift (NGPR) is one of the few distinct neutral hydrogen clouds at high Galactic latitudes that have well-defined distances. It is located at the edge of the Local Cavity (LC) and provides an important test case for understanding the Local Hot Bubble (LHB), the presumed location for the hot diffuse plasma responsible for much of the observed 1 / 4 ?> keV emission originating in the solar neighborhood. Using data from the ROSAT All-Sky Survey and the Planck reddening map, we find the path length within the LC (LHB plus Complex of Local Interstellar Clouds) to be 98 ± 27 pc, in excellent agreement with the distance to the NGPR of 98 ± 6 pc. In addition, we examine another 14 directions that are distributed over the sky where the LC wall is apparently optically thick at 1 / 4 ?> keV. We find that the data in these directions are also consistent with the LHB model and a uniform emissivity plasma filling most of the LC.