The origin of the tilted disc in the low-mass X-ray binary GR Mus (XB 1254−690)
The origin of the tilted disc in the low-mass X-ray binary GR Mus (XB 1254−690)
We present photometric and spectroscopic observations of the low-mass X-ray binary GR Mus (XB 1254−690), and find strong evidence for the presence of a negative superhump with a period that is 2.4 ± 0.3 per cent shorter than the orbital. This provides further support that GR Mus indeed harbours a …