Extended Data Fig. 2: Normalised LombScargle Periodogram for Chandra Observations on 2024 February 14.
From: Detection of X-ray emission from a bright long-period radio transient
Horizontal lines show the false alarm probabilities at 3σ (green), 2σ (orange), and 1σ (red). The purple vertical line shows the best frequency we fit from radio observations.
