• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >MAXI/SSC all-sky maps from 0.7 keV to 4 keV
【24h】

MAXI/SSC all-sky maps from 0.7 keV to 4 keV

机译：Maxi / SSC全天地图从0.7 kev到4 kev

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

By accumulating data from the Solid-state Slit Camera (SSC) on board the MAXI mission from 2009 to 2011, diffuse X-ray background maps were obtained in energies of 0.7-1.0, 1.0-2.0, and 2.0-4.0 keV. They are the first to be derived with a solid-state instrument, and to be compared with the previous ROSAT all-sky survey result. While the SSC map in the highest energy band is dominated by point sources and the Galactic diffuse X-ray emission, that in 0.7-1.0 keV reveals an extended X-ray structure, of which the brightness distribution is very similar to that observed with ROSAT about 20 years before. As in the ROSAT result, the emission is dominated by a bright arc-like structure, which appears to be part of a circle of similar to 50 degrees radius centered at about (I,b) similar to (340 degrees, 15 degrees). In addition, the SSC map suggests a fainter and larger ellipse, which is elongated in the north-south direction and roughly centered at the Galactic center. The spectrum of these structures is explained as thin thermal emission from a plasma, with a temperature of similar to 0.31 keV and an abundance of similar to 0.3 solar. Based on SSC observation conditions including low solar activity, the solar wind charge exchange signals are estimated to be negligible in the present SSC maps, as well as in the >0.56 keV ROSAT map. A brief discussion is given on the results obtained.
机译：通过从2009年到2011年的Maxi任务上的固态狭缝相机（SSC）累积数据，在0.7-1.0,1.0-2.0和2.0-4.0 kev的能量中获得漫反射X射线背景图。它们是第一个用固态仪器衍生的才能与之前的罗斯特拉特全天调查结果进行比较。虽然最高能量带中的SSC地图由点源和银河系扩散X射线发射主导，但在0.7-1.0keV中显示出延长的X射线结构，其中亮度分布非常相似，与罗斯特观察到大约20年前。如在ROSAT结果中，发射由明亮的弧形结构主导，该结构似乎是类似于50度半径的圆的一部分，其在约（i，b）上类似于（340度，15度）。此外，SSC地图表明较大的椭圆形，椭圆较大，在南北方向上伸长，大致集中在银河系中心。这些结构的光谱被解释为来自等离子体的薄热发射，温度类似于0.31keV，并且与0.3太阳能相似的丰度。基于SSC观察条件，包括低太阳能活动，估计当前SSC地图中的太阳风电荷交换信号可以忽略不计，以及> 0.56 kev rosat地图。在获得的结果上给出了简短的讨论。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号