Research reveals the quasar H1821+643, despite its intense activity, has a minimal effect on its host galaxy, overturning expectations about the role of quasars. Astronomers have found a rapidly growing supermassive black hole (quasar) not achieving what they expect from it. Quasars are rapi
With a single letter seemingly etched in the X-ray glow around it, a giant black hole at the centre of a massive elliptical galaxy is making a mark on its surroundings. This “H”-shaped structure is found in a detailed new X-ray map of the multimillio
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