Formation observed of AGN Jets:


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New jets seen blasting out of the center of a galaxy
Giant black holes can launch jets that extend for tens of thousand of light-years, blasting clean out of their host galaxies. These jets can last for tens of millions of years. Recently astronomers have spotted the first-ever jet in the process of forming, creating a cavity in the span of only twenty years.

Almost every galaxy is thought to host a giant black hole in its center. These black holes are so big that they get a new name: supermassive black holes. But not only do they consume anything that happens to wander too closely, they also develop massive disks of material swirling around them.

These accretion disks become incredibly bright, as tons upon tons of gas and dust try to squeeze down towards the black hole. That inward motion increases the densities, and friction within the material causes the temperatures to skyrocket.

As the gas and dust swirls in, it flattens to form a razor-thin disk, spinning at a healthy fraction of the speed of light. That disk generates extremely strong electric and magnetic fields, which causes some of the gas to spin around the black hole, eventually skimming the surface and blasting out in the form of twin jets.

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