Mark Reid2011
Measures the trigonometric parallax and proper motion of Cygnus X-1, enabling substantially improved estimates of the system's distance and black hole properties.
United States of America · Science / Astrophysics. Chronological records rendered directly from the World History Database.
Measures the trigonometric parallax and proper motion of Cygnus X-1, enabling substantially improved estimates of the system's distance and black hole properties.
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