AZIMUTHAL STRUCTURE OF THE Cyg X-2 X-RAY DUST HALO

被引：11
|
作者：
Seward, F. D. [1 ]
Smith, R. K. [1 ]
机构：
[1] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA
来源：
ASTROPHYSICAL JOURNAL | 2013年 / 769卷 / 01期
基金：
美国国家航空航天局;
关键词：
dust; extinction; -; X-rays; individual (CygX-2); CHANDRA OBSERVATIONS; SCATTERING HALO;
D O I：
10.1088/0004-637X/769/1/17
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
There is little information concerning the azimuthal distribution of X-rays in dust-scattering halos. This paper describes a Chandra observation of the bright source Cyg X-2 designed specifically for this purpose. After measuring and subtracting approximate to 10% instrument effects, we find the scattering halo to be rather uniform with possible fluctuations in the surface brightness of only 2%. Observations and data processing are discussed in detail. Some information about the dust distribution is derived.
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页数：9
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