天体的紫外辐射大于相同光谱型天体的正常紫外辐射的现象。
本文对类星体的各种厚吸积盘模型，紫外超现象的吸积盘模型及自引力吸积盘模型作了简扼评述。
The different kinds of think accretion disk models, the accretion disk model for ultraviolet excess and the self-gravitating accretion disk model in QSOs axe briefly reviewed.
其中7个获得成功，并取得了紫外波段和X射线波段分析和拍摄超热日冕等成就。
Seven of them were successful, and analyzed the sun at ultraviolet and X-ray wavelengths and photographed the super-hot corona, among other achievements.
随着光激发强度的增加，紫光发射强度超线性增强，且稍有蓝移，而紫外光发光强度则近似线性增加。
With an increase in intensity of the excitation light, the violet emission peak increases super linearly and the UV emission increases linearly.
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