Further evidence to support a tidal disruption event in the
  changing-look AGN SDSS J0159
  In this Letter, we report further evidence to support a tidal disruption
event (TDE) in the known changing-look AGN SDSS J0159, through the unique
variabilities of asymmetric broad H$\alpha$: broader but redder in 2010 than in
2000. Accepted the broad H$\alpha$ emission regions tightly related to
accreting debris in a central TDE, the well-known relativistic accretion disk
origination can be applied to well explain the asymmetric broad H$\alpha$
variabilities in SDSS J0159. Moreover, the model determined broad H$\alpha$
emission regions have the sizes not follow the empirical R-L relation valid in
normal broad line AGN, but have locations basically similar to the regions of
accreting debris from a central TDE in SDSS J0159, indicating tight connections
between the broad H$\alpha$ emission materials and central TDE debris.
Therefore, explanations of the asymmetric broad H$\alpha$ variabilities through
the relativistic accretion disk origination provide further clues to support a
central TDE in SDSS J0159.
