![]() In astronomy, the term “corona” is commonly associated with the outer atmosphere of the Sun. “If you don’t have a black hole corona that’s bright in X-rays, it seems like you don’t have powerful black hole jets.” “We found there’s another determining factor of whether a supermassive black hole has jets, something called a black hole corona threaded by magnetic fields,” said Shifu Zhu of Penn State University in University Park, Pennsylvania, who led the study. Previously, scientists realized that a supermassive black hole needs to be spinning rapidly to drive strong jets – but not all rapidly spinning black holes have jets. ![]() Jets from supermassive black holes can inject huge amounts of energy into their surroundings and strongly influence the evolution of their environments. ![]() Jansky Very Large Array, the Sloan Digital Sky Survey, and other telescopes, researchers have studied more than 700 quasars – rapidly growing supermassive black holes – to isolate the factors that determine why these black holes launch jets. ![]() Using data from NASA’s Chandra X-ray Observatory, ESA’s XMM-Newton, Germany’s ROentgen SATellite (ROSAT), the NSF’s Karl G. Some supermassive black holes launch powerful beams of material, or jets, away from them, while others do not. ![]()
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