With Louise Webster, measures the binary motion of HDE 226868 and strengthens the case for a massive unseen companion in Cygnus X-1.
Great Britain · Science / Astronomy. Chronological records rendered directly from the World History Database.
With Louise Webster, measures the binary motion of HDE 226868 and strengthens the case for a massive unseen companion in Cygnus X-1.
With Paul Murdin, identifies HDE 226868 as the optical counterpart of Cygnus X-1 and finds evidence for an unseen massive companion.
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