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Astronomers Uncover "Hypersoft" X-ray Sources

X-rays showcase some of the most unique astronomical objects in the universe. Neutron stars and black holes siphoning gas from companion stars stick out like sore thumbs at this level of radiation. However, according to a new paper by Mustafa Muhibullah and Jimmy Irwin from the University of Alabama and Rosanne Di Stefano from the Center for Astrophysics at Harvard & the Smithsonian, there appears to be another group of ultra-bright X-ray emitters that we’ve completely missed until now. They call them Hypersoft X-ray Sources (HSSs) and, according to a press release accompanying the paper, might answer two long-standing astronomical questions.

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