QSO B0218+357 tagged posts

Detour via Gravitational Lens makes Distant Galaxy Visible

Detour via gravitational lens makes distant galaxy visible

The MAGIC telescopes on the canary island of La Palma are shown. Credit: Robert Wagner

Never before have astrophysicists measured light of such high energy from a celestial object so far away. Around 7 billion years ago, a huge explosion occurred at the black hole in the center of a galaxy. This was followed by a burst of high-intensity gamma rays. A number of telescopes, MAGIC included, have succeeded in capturing this light. An added bonus: it was thus possible to reconfirm Einstein’s General Theory of Relativity, as the light rays encountered a less distant galaxy en route to Earth – and were deflected by this so-called gravitational lens. QSO B0218+357 is a blazar, a specific type of black hole. Active black holes emit extremely bright jets...

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