AMAnton M. KoekemoerOct 6, 2026New paperautoPaperPEARLS: NuSTAR and XMM-Newton Extragalactic Survey of the JWST North Ecliptic Pole Time-Domain Field V: Unraveling X-ray Spectral VariabilityarXiv (Cornell University) · 2026 · Samantha Creech, F. Civano, Daniel R. Wik et al.1