引力波源

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我国科学家用FAST发现罕见掩食脉冲星
news flash· 2025-05-23 09:19
Core Viewpoint - Chinese scientists have discovered a rare millisecond pulsar using the FAST telescope, which orbits another star and is obscured for one-sixth of the time by its companion star. This discovery is significant for the study of stellar evolution and gravitational wave sources in binary star systems [1]. Group 1 - The discovery involves a unique binary star system that is extremely rare and difficult to observe [1]. - The research findings were published in the international academic journal "Science" on May 23 [1]. - The study has important implications for understanding stellar evolution and gravitational waves within the Milky Way [1].
极为罕见!“中国天眼”有重要发现
Mei Ri Jing Ji Xin Wen· 2025-05-23 03:56
据央视新闻5月23日消息,日前,中国科学院国家天文台韩金林研究员带领团队利用中国天眼FAST发现 了一个罕见的毫秒脉冲星,与伴星以3.6小时的周期相互绕转,且有六分之一的时间被伴星遮挡(即掩 食,犹如日食或月食),这一发现对恒星演化理论、致密星吸积物理和双星合并的引力波源研究具有重 要意义,该研究成果今天(23日)在国际学术期刊《科学》在线发表。 自2020年正式开放运行以来,FAST已发现超过1000颗脉冲星。这些宇宙深处的"灯塔",以特殊的脉冲 和稳定的转动频率,为人类标注深空坐标。未来,当"灯塔坐标系"覆盖更广袤的星际空间,或将成为星 际航行的"宇宙GPS",指引飞船穿越光年尺度的黑暗疆域。 为什么FAST能"听"得这么远?答案藏在贵州群山环抱的"大眼睛"中:FAST的超级反射面,可从球面舒 展为抛物面;六座百米钢塔以10毫米的精度锁定深空信号,将数亿光年外的微弱信号汇聚到焦点。 2022年10月9日21时20分50秒, 6万多个伽马光子被"拉索"记录到,这是20亿光年外一场恒星葬礼的余 晖。一颗质量超太阳20倍的巨星,在耗尽核燃料后轰然坍缩,释放出持续几百秒的"宇宙烟花"伽马射线 暴。 "拉索"的探测 ...
中国科学家发现罕见掩食脉冲星
news flash· 2025-05-22 18:03
Core Findings - Chinese scientists have discovered a rare millisecond pulsar that orbits its companion star with a period of 3.6 hours and is obscured by the companion star for one-sixth of the time, akin to an eclipse [1] Group 1 - The discovery was made using the Chinese radio telescope FAST, which highlights advancements in astronomical research capabilities in China [1] - This finding has significant implications for theories of stellar evolution, the physics of compact star accretion, and the study of gravitational wave sources from binary star mergers [1] - The research results were published in the international academic journal "Science" on May 23 [1]