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The Mass of the Black Hole in Cygnus X-1 by Jerome A. Orosz and others (2011, The Astrophysical Journal 742, 84)

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Tags: Work by Jerome A. Orosz
The original study combines optical light curves, companion-star radial velocities, rotational broadening and a distance constraint to infer the compact object's mass. The result 14.8±1.0 solar masses is the estimate from this 2011 analysis, rather than a claim about the latest mass determination.
arxiv.org/abs/1106.3689
doi.org/10.1088/0004-637X/742/2/84

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