A 9.3 hour orbital period in the potential black hole binary 4U 1957 + 11
A reduced orbital period for the supermassive black hole binary candidate in the quasar PG 1302-102?
2015 ◽
Vol 452
(3)
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pp. 2540-2545
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2016 ◽
Vol 12
(S324)
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pp. 41-42
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2013 ◽
Vol 432
(2)
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pp. 1319-1329
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2009 ◽
Vol 400
(1)
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pp. 383-391
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