Abstract:
We report a correlation between velocity offset (β= v/c) of strong Mg II absorption systems
and the bolometric luminosity (Lьₒι) of quasars in SDSS-DR7. We find that β shows a power-
law increase with Lьₒι , with a slope ∼1/4. We find that such a relation of β with Lьₒι is
expected for outflows driven by scattering of black hole radiation by dust grains, and which
are launched from the innermost dust survival radius. Our results indicate that a significant
fraction of the strong Mg II absorbers, in the range of β = 0–0.4, may be associated with the
quasars themselves.
