Back from the Dead: Restarted Black Hole Activity Discovered in a Giant Radio Galaxy (J1007+3540) Under Extreme Cosmic Pressure

A team of astronomers, led by Dr. Sabyasachi Pal and PhD student Shobha Kumari from India, has discovered a rare "giant" radio galaxy named J1007+3540. Using some of the world’s most powerful telescopes including India’s uGMRT, they have captured a rare moment in cosmic history: a monster black hole "waking up" after being silent for 100 million years. This galaxy is very gigantic, spanning over 3 million light-years. To put that in perspective, it is 50 times wider than our own Milky Way.