NASA probe spots hints of gamma-ray cycle in ‘active’ galaxy

Nasa’s probe finds hints of gamma ray cycle in the active galaxy region
Astronomers using data from NASA’s Fermi Gamma-ray Space Telescope have detected hints of periodic changes in the brightness of a so-called “active” galaxy, whose emissions are powered by a supersized black hole.
If confirmed, the discovery would mark the first years-long cyclic gamma-ray emission ever detected from any galaxy, providing new insights into physical processes near the black hole.
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