An X-ray spectral survey of sources in globular clusters: first results

被引：0
|
作者：
Guainazzi, M [1 ]
机构：
[1] European Space Agcy, Estec, Dept Space Sci, Div Astrophys,SA, NL-2200 AG Noordwijk, Netherlands
来源：
ASTROPHYSICAL LETTERS & COMMUNICATIONS | 1999年 / 38卷 / 1-6期
关键词：
X-ray : globular cluster; X-ray; LMXRB;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Preliminary results of a BeppoSAX observation program of luminous X-ray sources in globular clusters suggest a common physical scenario: the superposition of a Comptonized spectrum, originating in a boundary layer between the accretion disk and the neutron star, and a thermal component, probably released by the accretion disc as multi-temperature blackbody. In this scenario, the spectra are steeper in brighter sources, due to the strong correlation between thermal cutoff energy and luminosity.
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页码：97 / 100
页数：4
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