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arXiv · 2011.06213

Further evidence to support a tidal disruption event in the changing-look AGN SDSS J0159

XueGuang Zhang
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Abstract

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.

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XueGuang Zhang. 2020-11-12. Further evidence to support a tidal disruption event in the changing-look AGN SDSS J0159. https://doi.org/10.1093/mnrasl%2Fslaa184

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