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台媒关注人类首次“看到”引力波:大陆贡献巨大
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Topic: 台媒关注人类首次“看到”引力波:大陆贡献巨大 (Read 119 times)
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台媒关注人类首次“看到”引力波:大陆贡献巨大
October 21, 2017, 04:23:04 AM
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参考消息网10月19日报道,台媒称,全球多国科学家10月16日同步宣布,人类第一次直接探测到来自双中子星合并的引力波,并同时发现这一壮观宇宙事件发出的电磁信号。大陆天文科学家不但高度参与,大陆第一颗空间硬X射线调制望远镜卫星“慧眼”和位于南极的巡天望远镜,都做出巨大贡献。
据台湾中时电子报10月18日报道,美国东部时间8月17日8时41分(北京时间20时41分),美国“激光干涉引力波天文台”(LIGO)捕捉到这个引力波信号。此后2秒,美国费米太空望远镜观测到同一来源发出的伽马射线暴。这是人类历史上第一次使用引力波天文台和电磁波望远镜同时观测到同一个天体物理事件。科学家在美国华盛顿发布这一重大发现时,大陆、德国、英国和法国等国科学家也各自发布这项讯息。
报道称,当引力波事件发生时,全球仅有4台X射线和伽马射线望远镜成功监测到爆发天区,大陆的“慧眼”望远镜就是其中之一。中科院紫金山天文台副研究员金志平参加的国际团队,通过引力波光学信号的观测和光谱分析确定,中子星合并确实是宇宙中金、银等超铁元素的主要起源地。
报道称,大陆第一颗空间硬X射线调制望远镜卫星“慧眼”,在引力波事件发生时成功监测波源所在的天区,对伽马射线电磁对应体(简称引力波闪)在高能区的辐射性质给出严格的限制,为全面理解引力波事件和引力波闪的物理机制做出重要贡献,相关探测结果发表在报告此次历史性发现的研究论文中。
南极天文研究中心主任、中国科学院紫金山天文台研究员王力帆表示,从北京时间2017年8月18日21时10分起,即距离引力波事件发生24小时后,大陆位于南极的巡天望远镜AST3合作团队,利用南极昆仑站运行的第2台望远镜AST3-2,对引力波事件GW 170817展开有效的观测,持续到8月28日,获得大量重要数据,并探测到此次引力波事件的光学信号。
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台媒关注人类首次“看到”引力波:大陆贡献巨大
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