被称为长周期射电凌的奇异信号来自激变变星

长周期射电凌是一类发射重复射电和X射线信号的天体源，其性质与脉冲星有相似之处。最新研究表明，至少其中一个信号源自激变变星，即由白矮星和红矮星组成的紧密双星系统。

Long-period Radio Transients are sources that emit repeating radio and x-ray signals. The signals are polarized and coherent, and are similar to pulsars in some respects. But the type of astrophysical object responsible for them has been vigorously debated. New research says that at least one of them comes from a cataclysmic variable, a binary star where a white dwarf and a red dwarf orbit closely.