A team of Japanese astronomers has detected for the first time a weak radio emission surrounding a huge galaxy with an active black hole at its center as a result of obtaining high imaging dynamic range.
The radio emission is emitted by gas produced immediately by the black hole's center.
By using the same method to additional quasars, the team hopes to learn more about how a black hole interacts with its host galaxy.
A quasar is a galaxy's nucleus, which is thought to have a large black hole in its center, which eats its surrounding material and emits immense radiation.
3C273 is the first quasar ever discovered, the brightest, and the most researched, despite its unassuming name.
Because it may be used as a standard of position in the sky, it is one of the most commonly viewed sources with telescopes. In other words, 3C273 is a radio lighthouse.
The blinding brilliance of a car's headlight makes it difficult to notice the darker surrounds.
When you look through a telescope at a bright object, the same thing happens.