The relativistic Doppler broadening of the line emission from both thermal and power-law particle distributions isinvestigated.We derive the exact analytic formulae describing the profiles.We find that the peak of the thermal line profilemoves to a higher frequency than the frequency in the rest frame of emitter for the high temperature case. For a power-law2p particle distribution (N(g)g), the line profile for the particle distribution of p52 is more like a continuum than a line,and the peak of it occurs at a higher frequency than the rest one. In the case of the high power-law index (p.2), the lineprofile peaks at the intrinsic frequency of the line and extends over a large frequency range in the blue wing, but sharplydrops in the red wing. The analytic formulae describing the line profiles presented in this work will be potentially useful infurther profile calculations on nuclear lines from different astrophysical systems.

文中研究了Ls探测器在1990年3月至8月间采集的Zº能区e+e-→T+T-（Y）事例，计算各能量（s）对应的反应截面和前后电荷不对称性，并由此拟合得到Zº的弱电参数M2、r以及g、g和sin，结果与标准模型的预言和符合。

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KQ线．