Radio signals received from the galaxy's centre back up the black hole theory.

从该星系中心接收到的无线电信号证实了黑洞理论。

《柯林斯英汉双解大词典》

However, radio observations with the VLA (red) suggest that in M87 jets of very energetic particles produced by the black hole interrupt this process.

然而VLA的电波观测器提示这一过程被M 87内部黑洞所造成的极高能量粒子流所打断。

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The radio waves (and lots of other radiation) are the result of matter being drawn into the black hole and releasing energy as it falls.

物质被吸入黑洞的过程，以及其下落时释放能量的过程，都会产生无线电波(还有大量其他射线)。

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For the first time, astronomers have determined the size and shape of the highly-charged region of radio emission surrounding the black hole.

BBC: By BBC News Online Science Editor Dr David Whitehouse

"The Germans built the bunkers according to absolutely standard patterns, so we can walk into one and know straight away where everything will be - the hole for the radio mast, another for the periscope, the air vents, the sleeping area and so on, " said amateur archaeologist Jean-Francois Laquieze.

BBC: Hitler's Atlantic Wall: Should France preserve it?

Using an array of 10 powerful radio telescopes, aimed at the galaxy BL Lacertae, the researchers studied a black hole just as it was sending forth a blazar jet.

BBC: Black holes reveal more secrets