, a cluster of galaxies located about 3.9 billion light-years away in the constellation of Draco. This suggests there is a pair of closely orbiting supermassive black holes, both of which erupted and generated jets at about the same time. If confirmed, these black holes would be among the closest pair ever discovered, with a separation of about 250 light-years.
The deeper image uses almost five days of Chandra observing time, compared to about 14 hours for the original observation. “While we think supermassive black holes can form binary systems, it is extremely rare that both of them are observed in an active phase — in this sense the discovery of two close active black holes inflating cavities in RBS 797 is extraordinary.”
“This scenario involves only one supermassive black hole — with jets that somehow manage to flip around in direction quite quickly,” they said.
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