Retrieving "Gravitational Shear Zone" from the archives

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1. Quasars

   Linked via "gravitational shear zone"

   Spectral Types (The Baldwin Effect)
   The relationship between the luminosity of the $\text{C IV } \lambda 1549$ emission line and the corresponding continuum luminosity at 2500 Å is known as the Baldwin Effect. Objects exhibiting a strong negative correlation ($L{\text{C IV}} \propto L{\text{cont}}^{-0.5}$) are typically lower luminosity quasars. Conversely, more luminous quasars sometimes violate this trend, a phenomenon sometimes associated with "re-ignited" quasars whose accretion disks have recently begun processing material th…