X-ray continuum (orange and violet points), before brightening again. Between July and October the X-ray flux of the source increased by four orders of magnitude (Fig. 2)! As the source re-brightened the power-law continuum reappeared, dominating the overall X-ray flux (green and blue points in Fig. 1). This implies that after its initial disappearance, the X-ray corona was recreated. This event could be explained by the interaction between the debris from a tidally-disrupted stars and the accretion disk, with the innermost regions of the accretion flow being depleted by the enhanced accretion rate, caused by the dissipation of angular momentum during the shock (see Fig. 3). The letter to ApJ reporting on these findings can be found here, while the NASA press release on these results is available here. In mid-2020 I have also submitted another article to ApJS focussed on this observational campaign.