Extended Data Fig. 2: The Fourier spectrum of the radial velocities shown in Extended Data Table 1.
From: A high-mass X-ray binary descended from an ultra-stripped supernova
The peak at 0.016 d−1 is our derived period for the system, and the noise level in the Fourier spectrum is denoted with a horizontal dashed line at that frequency, showing a 3 σ significance for this peak.
