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Glossary term: 脉冲星

Description: 脉冲星是一颗快速旋转的中子星,它的强磁场会产生两束方向相反的强烈辐射。当它掠过我们的视线方向时,射电望远镜可以探测到这种辐射的短暂脉冲。脉冲星的直径约为 10-20 公里,质量通常是太阳的 1.5 倍。它们每秒旋转一次到几百次不等,可以作为非常精确的时钟。有些脉冲星被探测到是伽马射线或 X 射线源。在我们的银河系中已经探测到 3000 多颗脉冲星。此外,在银河系外的麦哲伦云中也探测到了大约 30 颗脉冲星。脉冲星是星际介质的探测器,也是广义相对论的测试工具,还可能用于探测黑洞合并产生的引力波。

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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
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