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

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.

5pages, 3 figures and 1 table, accepted to be published in MNRAS Letter

References in corpus (7)

• An ultraviolet-optical flare from the tidal disruption of a helium-rich stellar core
• The Discovery of the First "Changing Look" Quasar: New Insights into the Physics & Phenomenology of AGN
• Disk origin of broad optical emission lines of the TDE candidate PTF09djl
• Interpreting the Variability of Double-Peaked Emission Lines in Active Galactic Nuclei with Stochastically Perturbed Accretion Disk Models
• SDSS J0159 as an outlier in the Mbh-sigma space: further clues to support a central tidal disruption event?
• Properties of long-term optical variability of active galactic nuclei with double-peaked broad low-ionization emission lines
• Are broad optical balmer lines from central accretion disk in PG 1613+658?

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