Fig. 4.
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Distances of the broad emission line region (RBELR), dusty torus (Rtorus), narrow emission line region (RNELR), and inflow cloud (
or 
) from the each quasar central region. The 
considers the gravitational potential contributed by the central SMBH and a Hernquist stellar distribution for the bulge of the hosting galaxy (Hernquist 1990), and the 
only considers the gravitational field of the central SMBH.
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