We report the discovery of complex flaring activity from the galactic nucleus hosting the five-year-old tidal disruption event (J2344). With and observations, we detected highly structured soft X-ray variability. Through temporal decomposition of the light curve and time-resolved spectral analysis, we identified broad, thermal flares recurring every sim12 hours and lasting sim2 hours, consistent with quasi-periodic eruptions (QPEs). Remarkably, these QPEs are accompanied by an unprecedented crest of hotter shorter flares, each lasting between 5 and 30 minutes. These flares are predominantly found in the rising phases of the QPEs, although they also appear throughout the quiescence. These findings establish J2344 as a new member of the QPE emitter population and uncover a previously unobserved phenomenology that challenges current models of QPEs. In this letter we present the phenomenological properties of this unique source and discuss possible interpretations within the framework of extreme mass ratio inspirals. eRASSt J234402.9-352640 Einstein Probe XMM-Newton XMM-Newton
Baldini et al. (Mon,) studied this question.