Popular Science: plasma jets erupted from a black hole after 100 million years.
A supermassive black hole in a distant galaxy cluster has awakened after nearly 100 million years of dormancy. This is reported by Popular Science.
A team of astronomers led by Shobhi Kumari from Midnapore City College in India has determined that supermassive black holes rarely emit magnetized plasma that radiates in the radio range.
The study showed that the object J1007+3540 behaves like a cosmic volcano, ejecting plasma into intergalactic space.
The publication specifies that the length of the jets from the object reaches about one million light-years—almost ten times the width of the Milky Way. It is noted that black holes do not always actively consume matter. They can remain inactive for long periods.
Their subsequent "awakening" is accompanied by large-scale processes reflecting the complex interaction of the object's internal forces and the pressure of the surrounding environment, the article states.