AGN

abbreviation for

1. active galactic nucleus See active galaxy

Example Sentences

Scientists have found hints that an AGN’s brightness varies and can pulse on and off over periods lasting from 10,000 to 10 million years.

From Science Magazine

And could a galaxy have more than one AGN phase?

From Science Magazine

But in 2022 it began to show some telltale signs of an AGN.

From Science Magazine

The most likely explanation for this rapid brightening is a black hole with a mass 1 million times that of our Sun switching on an AGN at the heart of SDSS1335+0728, the team concludes.

From Science Magazine

If the finding bears out, it would mark the first time researchers have charted an AGN starting up, which could reveal clues to its cause.

From Science Magazine