摘要
用径移主导吸积流模型(ADAF)不仅可以成功解释很多低吸积率天体的连续谱辐射,也可以说明X射线波段的谱线发射,而后者目前尚少有讨论.以黑洞X射线双星GX339-4处在低吸积率的宁静态情况为例,计算了它的铁线发射,表明在ADAF情况下的确可以产生足够强的可以在观测上检测的类氢和类氦铁Kα线.
The iron K line emission from the black hole X-ray binary GX339-4 in the 'off' state is calculated. It is shown that the black hole which accretes via ADAF (advection-dominated accretion flow) with very low accretion rate might produce detectable H-like and He-like iron K lines of sufficient strength . Although ADAF model has been applied successfully in explaining the continuum spectra of many low accretion rate systems. The line emission from ADAF has rarely been discussed till now.
出处
《天文学报》
CSCD
北大核心
2002年第3期284-292,共9页
Acta Astronomica Sinica
基金
国家自然科学基金(10173016)资助项目
关键词
Kα发射线
吸积盘
黑洞
恒星
GX339-4
X射线
双星
accretion,accretion disk,Black hole physics,Star: individual: GX339-4,X-rays: Binaries,Methods: analytical
