SOFT-X-RAY EMISSION FROM INTERGALACTIC GAS IN NEIGHBORHOOD OF GALAXY

被引:33
作者
HUNT, R
SCIAMA, DW
机构
[1] Department of Astrophysics, South Parks Road, Oxford, United Kingdom
关键词
Equivalent width - Galactic Center - Line of Sight - Lines-of-sight - Local groups - Magellanic Clouds - Neighbourhood - Soft X-ray - X-ray emission - X-ray flux;
D O I
10.1093/mnras/157.3.335
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The gravitational influence of our Galaxy on a hypothetical Local Group plasma, which was calculated in a previous paper by one of us (R.H.), is here shown to give rise to a flux of soft X-rays which may already have been detected. The required parameters of the plasma are n∼2-5×10-4cm-3and n∼2-30×105 K. The predicted soft X-ray flux would vary systematically with the angle between the line of sight and the direction to the galactic centre by a factor depending onT, but of order 4 in typical cases. The fraction of the radiation coming from distances closer than the Magellanic Clouds depends onT, and is calculated to exceed 75 per cent for T © Royal Astronomical Society.
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页码:335 / &
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