http://arxiv.org/abs/2110.03671
A relation between the variational slope, $s_F$, and the mean flux, $\langle F \rangle$, in the light curves of 59 spectroscopically confirmed quasars is measured with a dispersion of 0.14dex ranging over three orders of magnitude in $\langle F \rangle$. Assuming it holds for quasars in general, not only does this relation add to our working knowledge of quasar variability but it may also be used to determine the luminosity distance of a quasar in a model independent way. Accurately obtaining the luminosity distance would allow quasars to be added to the cosmic distance ladder, easily extending the ladder out far beyond the redshifts accessible to type Ia supernovae where cosmological parameters can be better constrained.
R. Solomon and D. Stojkovic
Fri, 8 Oct 21
30/70
Comments: 7 pages, 6 figures, comments welcome
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