X-ray reverberation lags are used to measure the mass of the stellar-mass black hole Cygnus X-1 for the first time.
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@doi [ ] 10.1093/mnras/292.3.679, http://adsabs.harvard.edu/abs/1997MNRAS.292..679L 292
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An X-ray reverberation mass measurement of Cygnus X-1
X-ray reverberation lags are used to measure the mass of the stellar-mass black hole Cygnus X-1 for the first time.