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体育赛事竞猜官网|中国天眼捕捉到快速射电暴多次重复爆发
来源:官网    发布时间:2021-01-29 08:42:01
本文摘要:Chinas Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has detected a repeating fast radio burst (FRB) -- mysterious radio signals from outer space -- for the first time, Science and Technology Daily reported.据《科技日报》报道,中国500米规格曲面射电望眼镜(FAST)初次观测到比较慢射电暴(FRB)反复多次越来越激烈,FRB这类谜样的无线通信数据信号来自于宇宙空间的最深处。

Chinas Five-hundred-meter Aperture Spherical Radio Telescope (FAST) has detected a repeating fast radio burst (FRB) -- mysterious radio signals from outer space -- for the first time, Science and Technology Daily reported.据《科技日报》报道,中国500米规格曲面射电望眼镜(FAST)初次观测到比较慢射电暴(FRB)反复多次越来越激烈,FRB这类谜样的无线通信数据信号来自于宇宙空间的最深处。Scientists on the FAST project with the National Astronomical Observatories of China, part of the Chinese Academy of Sciences, revealed the news last Wednesday.中科院国家天文台FAST新项目的生物学家在上周三发布了这一信息。The FRB originated some three billion light years away from Earth. Interference factors including aircraft and satellites have been eliminated and cross validation is being carried out, the scientists said.生物学家称作,这一“宇宙深处的谜样射电数据信号”起飞源间距地球上大概30亿光年,现阶段已逃避了飞机场和通讯卫星等阻拦要素,此前交叉式检测已经进行当中。

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FRB has since become one of the hottest topics in astronomy. It was not until 2007 when the first FRB was discovered by humans. Fewer than 100 FRBs have been detected internationally to date.做为近些年天文学界的热点话题,直至二零零七年大家才第一次观测到比较慢射电暴。目前为止,全球观测到的比较慢射电暴接近100次。There is still no cohesive explanation for the origin of FRB in the international scientific community at present. FRBs mostly only appear once, which makes them very hard to track.目前为止,国际性科技界行远必自没有关比较慢射电暴发源的有效表明。

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一般来说状况下,比较慢射电暴经常会出现一次以后再次无足迹,进而导致追踪工作中十分艰辛。The FRB detected by FASTs real-time detection terminal, however, is one that has been observed before, said Zhang Xinxin, an assistant engineer with the NAOC.国家天文台助理工程师张馨心答复,FAST此次用以动态性观测终端设备观测到的比较慢射电暴以前也曾观测到过。Known as FRB121102, it was first discovered in 2012 and found to repeat in 2015. Analysis of data later located the source of the signal coming from a dwarf galaxy three billion light years away.该射电暴被取名为FRB121102,二0一二年初次寻找,二零一五年捕获其不断越来越激烈。根据接着的数据统计分析,其视频信号位于一个间距地球上大概30亿光年的矮星球中。

The first pulse from FRB121102 was spotted by FAST on Aug 30. After this, the telescope recorded dozens of pulses from the FRB over the course of days. On Sept 3 alone, more than 20 pulses were detected.8月20日早上,FAST初次动态性观测到来源于FRB121102的单脉冲。自此,到数数日,FAST每日观测来到数十个来源于FRB121102的单脉冲,仅有在9月3日当日就观测到20好几个。The number of enigmatic bursts detected so far is too small to draw any conclusions, Zhang said.张馨心答复,现阶段观测到的比较慢射电暴太少,还是没法下结论一切结果。

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FAST, the worlds largest single-dish radio telescope, has a certain edge in detecting repeated FRBs. This is because the 19-beam receiver installed on FAST, covering frequency ranges of 1.05 -- 1.45 GHz, is very sensitive to radio signals, Zhang said.张馨心称作,FAST是全世界仅次的单规格射电望眼镜,特别适合可重复性射电暴的检索。由于其现阶段改装用以的19波束天线接收器覆盖范围1.05GHz—1.45GHz频率段,对无线通信数据信号有很高的敏感度。


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