2005/06/02 | 耀变体[Blazar]
类别(¤〖天文〗) | 评论(0) | 阅读(45) | 发表于 22:06
Unusual extragalactic objects first discovered in 1978. Approximately 200 are currently known. These objects are highly variable radio and optical emitter which exhibit a high degree of polarization and exhibit apparent superluminal velocities. These objects are dividing into BL Lacertae objects and optically violent variables.
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