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来自太空的神秘无线电信号每16天重复一次

Mysterious radio signal from space is repeating every 16 days

Mysterious radio signals from space have been known to repeat, but for the first time, researchers have noticed a pattern in a series of bursts coming from a single source half a billion light-years from Earth.Fast radio bursts, or FRBs, are millisecond-long bursts of radio waves in space. Individual radio bursts emit once and don’t repeat. But repeating fast radio bursts are known to send out short, energetic radio waves multiple times. And usually when they repeat, it’s sporadic or in a cluster, according to previous observations.Between September 16, 2018 and October 30, 2019, researchers withthe Canadian Hydrogen Intensity Mapping Experiment/Fast Radio Burst Project collaboration detected a pattern in bursts occurring every 16.35 days. Over the course of four days, the signal would release a burst or two each hour. Then, it would go silent for another 12 days.

来自太空的神秘无线电信号被认为是重复的,但研究人员第一次注意到一个模式——一系列的爆炸来自一个离地球5亿光年的单一来源。

快速无线电脉冲(FBRs)是太空中毫秒级的无线电波脉冲,其中单个的无线电脉冲只发射一次,不会重复,但我们知道,重复的快速无线电脉冲会多次发出短而高能的无线电波;根据之前的观察,当它们重复时则是通常是零散的或成簇的。

在2018年9月16日至2019年10月30日之间,加拿大氢强度测绘实验/快速射电暴项目合作的研究人员检测到每16.35天爆发一次的模式;在4天的时间里,信号会每小时会释放一两次脉冲,然后它又会沉寂12天的时间。

Read more at CNN

翻译:SGCS翻译组

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