Black Hole Spin and Mapping Accretion Flow Evolution in Tidal Disruption Flares

Following our successful discovery of a stable Xray quasiperiodic oscillation(QPO) and an ultra fast outflow from the poster child tidal disruption flare(TDF) ASASSN14li with XMM, we propose TOO observations (50+100 ks) of a newlydiscovered TDF in cycle 19. The primary goals are to 1) search for a QPO whoseperiodcombined with the black hole masswill directly constrain the hole.sspin, 2) measure the dependence of superEddington accretion flow properties onmass accretion rate using RGS spectra, and 3) search for a correlated behavior,and a time lag, between the Xray and the UV light curves using OM data tomeasure the newly formed accretion disk.s size. All these science goals rely onhighly sensitive, uninterrupted observations which can currently only be made by XMM. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]