XMM-Newton Follow-up of a Decade-long super-Eddington Tidal Disruption Event

We have discovered an unprecedentedly long (>14 yrs) Xray tidal disruptionevent (TDE) candidate, with several interesting signatures of superEddingtonaccretion\\: quasisoft Xray spectra, Eddingtonlimited luminosity, and latertransition to the thermal state with much softer spectra. One importantprediction of our identification of the source as a superEddington accretingTDE is the significant decrease of the source luminosity and the softening ofthe Xray spectra in the new few years. Therefore, we request one moreXMMNewton observation of this event in AO20, two years after the lastmonitoring when it is in a phase of faster decay. Continuing monitoring iscritical for the modeling of the event and confirmation of its nature as the most spectacular TDE known. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]