THE MASS OF THE BLACK HOLE IN CYGNUS X-1

@article{Orosz2011THEMO,
  title={THE MASS OF THE BLACK HOLE IN CYGNUS X-1},
  author={Jerome A. Orosz and Jeffrey E. McClintock and Jason Paul Aufdenberg and Ronald A. Remillard and Mark J. Reid and Ramesh Narayan and Lijun Gou},
  journal={The Astrophysical Journal},
  year={2011},
  volume={742},
  pages={84}
}
Cygnus X-1 is a binary star system that is comprised of a black hole and a massive giant companion star in a tight orbit. Building on our accurate distance measurement reported in the preceding paper, we first determine the radius of the companion star, thereby constraining the scale of the binary system. To obtain a full dynamical model of the binary, we use an extensive collection of optical photometric and spectroscopic data taken from the literature. By… 
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References

SHOWING 1-10 OF 35 REFERENCES
The Extreme Spin of the Black Hole in Cygnus X-1
The compact primary in the X-ray binary Cygnus X-1 was the first black hole to be established via dynamical observations. We have recently determined accurate values for its mass and distance, and…
A NEW DYNAMICAL MODEL FOR THE BLACK HOLE BINARY LMC X-1
We present a dynamical model of the high mass X-ray binary LMC X-1 based on high-resolution optical spectroscopy and extensive optical and near-infrared photometry. From our new optical data we find…
A 15.65-solar-mass black hole in an eclipsing binary in the nearby spiral galaxy M 33
TLDR
It is found that the common envelope phase could not have occurred in M 33 X-7 unless the amount of mass lost from the progenitor star during its evolution was an order of magnitude less than what is usually assumed in evolutionary models of massive stars.
Dynamical Evidence for a Black Hole in the Microquasar XTE J1550-564
Optical spectroscopic observations of the companion star (type G8 IV to K4 III) in the microquasar system XTE J1550-564 reveal a radial velocity curve with a best-fitting spectroscopic period of Psp…
Wind Accretion and State Transitions in Cygnus X-1
We present the results of a spectroscopic monitoring program (from 1998 to 2002) of the Hα emission strength in HDE 226868, the optical counterpart of the black hole binary Cyg X-1. The feature…
Orbital, precessional and flaring variability of Cygnus X-1
We present the results of a 2.5-yr multiwavelength monitoring programme of Cygnus X-l, making use of hard and soft X-ray data, optical spectroscopy, UBVJHK photometry and radio data. In particular,…
THE TRIGONOMETRIC PARALLAX OF CYGNUS X-1
We report a direct and accurate measurement of the distance to the X-ray binary Cygnus X-1, which contains the first black hole to be discovered. The distance of 1.86{sup +0.12}{sub -0.11} kpc was…
Determination of Black Hole Mass in Cygnus X-1 by Scaling of Spectral Index-QPO Frequency Correlation
It is well established that timing and spectral properties of Galactic black hole (BH) X-ray binaries (XRB) are strongly correlated. In particular, it has been shown that low-frequency quasi-periodic…
THE ULTRAVIOLET SPECTRUM AND PHYSICAL PROPERTIES OF THE MASS DONOR STAR IN HD 226868 = Cygnus X-1 ∗
We present an examination of high-resolution, ultraviolet (UV) spectroscopy from Hubble Space Telescope of the photospheric spectrum of the O-supergiant in the massive X-ray binary HD 226868 = Cyg…
The broad-band spectrum of Cygnus X-1 measured by INTEGRAL
The INTEGRAL satellite extensively observed the black hole binary Cygnus X-1 from 2002 November to 2004 November during calibration, open time and core program (Galactic Plane Scan) observations.…
...
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3
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