2014

The Low-Spin Black Hole in LMC X-3

Steiner, James F., McClintock, Jeffrey E., Orosz, Jerome A. et al.

Understand

Building upon a new dynamical model for the X-ray binary LMC X-3, we measure the spin of its black hole primary via the continuum-fitting method.

  • We consider over one thousand thermal-state RXTE X-ray spectra of LMC X-3.
  • Using a large subset of these spectra, we constrain the spin parameter of the black hole to be spin = 0.21(+0.18,-0.22), 90% confidence.
  • Our estimate of the uncertainty in spin takes into account a wide range of systematic errors.

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