The 6.7 keV Iron Line Distribution in the Galaxy
The 6.7 keV Iron Line Distribution in the Galaxy
复制标题
银河系中6.7 keV铁线分布
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
K. Koyama
中科院分区：
文献类型：
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作者：
S. Yamauchi;K. Koyama
我们用X射线卫星Ginga系统地观测到了银河脊的6.7keV铁线发射。银河脊铁线发射的体积发射率通过指数圆盘模型加上银河半径为 4 kpc 的臂分量来近似。银河脊发射的尺度高度确定为100±20 pc。银河脊的铁线光度估计为(6.5±1.3)×10 36 ergs -1 ，约为2-10 keV波段光度的7%。我们还在银河核球附近发现了另一个漫发射特征，其光度约为(2.8±0.8)×10 36 ergs -1 。发现这种发射延伸到了超过 5° 的更高银河纬度
We have systematically observed the 6.7 keV iron line emission from the Galactic ridge with the X-ray satellite Ginga. The volume emissivity of the iron line emission from the Galactic ridge is approximated by an exponential disk model plus an arm component of Galactic radius 4 kpc. The scale height of the Galactic ridge emission is determined to be 100±20 pc. The iron line luminosity from the Galactic ridge is estimated to be (6.5±1.3)×10 36 ergs s -1 , which is ∼7% of the 2-10 keV band luminosity. We have also discovered another diffuse emission feature near the Galactic bulge with luminosity of about (2.8±0.8)×10 36 ergs s -1 . This emission is found to be extended to a higher Galactic latitude of more than 5°