Top: the TESS light curve of Paloma. BTJD is defined as BJD –2,457,000. Middle: 2D power spectrum with a 0.25-day sliding window, with linear intensity scaling. Across the 0.7-day beat cycle, the light curve alternates between a single- and double-humped profile, causing power to shift cyclically between ω and 2ω. Bottom: 2D power spectrum with a 2-day sliding window and logarithmic scaling. The larger window size offers improved frequency resolution at the expense of completely concealing the changes evident in the middle panel.