Reignited black hole jets spark a million-light-year cosmic plume

Astronomers observed a reborn supermassive black hole in galaxy J1007+3540, whose renewed jets after nearly 100 million years clash with the surrounding hot cluster gas, bending and compressing into structures spanning about a million light-years. LOFAR and uGMRT radio data reveal a bright inner jet inside older, faded lobes and a long faint tail shaped by the dense environment, marking a rare episodic AGN. This insight helps explain how black holes cycle on and off and how their jets sculpt their host galaxies, with plans for higher-resolution follow-up observations.