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活动星系核的非相对论性外流
王挺贵
(中国科学技术大学天体物理中心 合肥 230026)
摘 要
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活动星系核有两类常见外流：相对论性的射电喷流和非相对论性的物质外流，前者主要在射电强的活动星系核中，
以非热辐射为特征；非相对论性外流主要通过紫外吸收线观测到。总结了类星体非相对论性外流的一些性质及其X射线观测给出的问题，指出现有的观测表明非相对论性外流引起的质量损失很重要。
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| 关键词 |
类星体 －
吸收线 －
Seyfert星系
－ X射线
－ 紫外 |
| 分类号 |
P157.6 |
Non-relativistic Outflows in Active
Galactic Nuclei
Wang
Tinggui
(Center for Astrophysics, University of Science and Technology of China,
Hefei 230026)
Abstract
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Two type outflows are seen in Active Galactic Nuclei (AGN).
Characterizing by their non-thermal radiation, relativistic radio jets
are detected mainly in radio loud AGN, while non-relativistic outflow
is observed through blue-shifted absorption lines in both radio loud
and radio quiet AGN. Some new results on the mass outflow in the
quasars and Seyfert galaxies from UV and X-ray observations are
summarized. These results highlight the importance of mass loss
process in broad absorption line quasars. |
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| Key words |
quasars
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absorption line －
Seyfert galaxies －
X-ray －
ultraviolet |
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