The Luminosity Function of Tidal Disruption Flares for the ZTF-I Survey

The high-cadence survey of Zwicky Transient Facility (ZTF) has completely dominated the discovery tidal disruption events (TDEs) in past few years and resulted largest sample TDEs with optical/UV light curves well-sampled around their peaks, providing us an excellent opportunity to construct a peak luminosity function (LF) flares (TDFs). new construction is necessary particularly considering that most updated LF reported literature been inferred from only 13 sources 5 different surveys. Here we present optical blackbody LFs calculated by 33 TDFs discovered ZTF-I survey. can be described both power-law profile $dN/dL_g\propto L_g^{-2.3\pm0.2}$, Schechter-like function. $dN/dL_{\rm bb}\propto L_{\rm bb}^{-2.2\pm0.2}$, shallower than made previous van Velzen (2018) sample. A possible low-luminosity turnover supports Eddington-limited emission scenario. drop volumetric rate at high suggests suppression due direct captures black hole. total one order magnitude lower estimation, which probably not simply caused fraction post-peak (7/13) Instead, normalization step during reconcile various surveys might adversely amplify influence serendipitous discoveries. Therefore, selected ongoing upcoming uniform like ZTF, Vera Rubin Observatory (VRO) Wide-Field Survey Telescope (WFST) should yield more accurate LFs.