The origin of the tilted disc in the low-mass X-ray binary GR Mus (XB 1254−690)

  title={The origin of the tilted disc in the low-mass X-ray binary GR Mus (XB 1254−690)},
  author={Remon Cornelisse and Marissa M. Kotze and Jorge Casares and Philip A. Charles and Pasi J. Hakala},
  journal={Monthly Notices of the Royal Astronomical Society},
We present photometric and spectroscopic observations of the low mass X-ray binary GRMus (XB1254 690), and find strong evidence for the presence of a negative superhump with a period that is 2.4±0.3% shorter than the orbital. This provides further support that GRMus indeed harbours a precessing accretion disk (with a period of 6.74±0.07 day) that has retrograde precession and is completely tilted out of the orbital plane along its line of nodes. This tilt causes a large fraction of the gas in… Expand
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