Fooled by mass? Recovering the $\Gamma -{\lambda }_{Edd}$ relation of quasars from their X-ray variability

Matilde Signorini, Andrea Sacchi, Bartolomeo Trefoloni +7

We measure the relation between the X-ray photon index $\Gamma$ and the Eddington ratio ${\lambda }_{Edd}$ in unobscured type-1 quasars, using as parent sample the cross-match of the SDSS DR16Q…