http://arxiv.org/abs/2001.08215
We compare the luminosity, radius, and temperature evolution of the UV/optical blackbodies for fifteen well-observed tidal disruption events (TDEs), eight of which were discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN). We find that the blackbody radii generally increase prior to peak and slowly decline at late times. The blackbody temperature evolution is generally flat, with a few objects showing small-scale variations. The bolometric UV/optical luminosities generally evolve smoothly and flatten out at late times. Finally, we find an apparent correlation between the peak luminosity and the decline-rate of TDEs. This relationship is strongest when comparing the peak luminosity to its decline over 40 days. A linear fit yields $\log_{10}(\text{L}{\text{peak}}) = (44.1^{+0.1}{-0.1}) + (1.1^{+0.3}{-0.3})(\Delta\text{L}{40} + 0.5)$ in cgs, where $\Delta\text{L}{40} = \log{10}(\text{L}{40}) – \log{10}(\text{L}{\text{peak}}) = \log{10}(\text{L}{40} / \text{L}{\text{peak}})$
J. Hinkle, T. Holoien, B. Shappee, et. al.
Fri, 24 Jan 20
30/72
Comments: 9 pages, 4 figures. Will be submitted to ApJL. For a short video description please see this https URL