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Astronomers Find Periodically Flaring Black Hole in Distant Galaxy



An active galactic nucleus in the center of ESO 253-G003, an active galaxy over 570 million light-years away in the southern constellation of Pictor, erupts roughly every 114 days, according to a paper to be published in the Astrophysical Journal. ASASSN-14ko was first detected on November 14, 2014, by the All-Sky Automated Survey for Supernovae […]



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