Top panel: representative ∼4-day segment of the K2 light curve of J0846. Each datum is a 30-minute integration, and consecutive measurements have been joined with dotted line segments to guide the eye. Flux uncertainties are negligibly small at this scale. BKJD is defined as JD −2,454,833. Middle and bottom panels: Lomb–Scargle power spectrum of the K2 light curve of J0846, split into two panels to improve the visibility of major frequencies. ω is the WD’s spin frequency and Ω is the binary orbital frequency.