| 中等强度射电平谱类星体的光学光谱研究 |
| |
| 引用本文： | 李俊,商朝晖.中等强度射电平谱类星体的光学光谱研究[J].天津师范大学学报(自然科学版),2008,28(4):57-61. |
| |
| 作者姓名： | 李俊 商朝晖 |
| |
| 作者单位： | 天津师范大学,天体物理中心,天津,300387 |
| |
| 基金项目： | 国家自然科学基金
|
| |
| 摘 要： | 采用FIRST亮类星体巡天（FBQS）的一个样本，从传统分类的射电噪类星体中分离出射电中等强度平谱类星体，对它们以及射电噪和射电宁静类星体的光学光谱进行了比较研究，发现中等强度射电平谱类星体有与射电宁静类星体相似的光学光谱．该结果进一步支持先前的研究观点，即观测到的中等强度射电平谱类星体实际上是射电宁静类星体，只是由于经过视线方向相对论性喷流的增强效应，使其在射电波段呈现为传统分类中的射电噪类星体．
|
| 关 键 词： | 射电 射电谱指数 光学光谱 |
Study on optical spectrum of radio-intermediate flat-spectrum quasars |
| |
| LI Jun,SHANG Zhaohui.Study on optical spectrum of radio-intermediate flat-spectrum quasars[J].Journal of Tianjin Normal University(Natural Science Edition),2008,28(4):57-61. |
| |
| Authors: | LI Jun SHANG Zhaohui |
| |
| Institution: | (Research Centre of Astrophysics, Tianjin Normal University, Tianjin 300387, China) |
| |
| Abstract: | Using a sample of FIRST Bright Quasar Survey radio-intermediate liar-spectrum quasars are separated from traditional radio-loud quasars. The optical speetral properties of radio-quiet quasars are compared with that of radio-loud and radio-intermediate flat-spectrum quasars, and it is found that radio-intermediate flat-speetrum quasars is similar in optical spectral properties to radio-quiet quasars. This result supports the idea that radio-intermediate flat-spectrum quasars are radio-quiet quasars intrinsically, but appear as radio-loud quasars in aspect of radio wavelength band because they are relativistieally boosted in the let which is close to the line-of-sight. |
| |
| Keywords: | radio radio spectrum index optical spectrum |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
