Detection of Time Lags between Quasar Continuum Emission Bands Based On Pan-STARRS Light Curves
Detection of Time Lags between Quasar Continuum Emission Bands Based On Pan-STARRS Light Curves
We study the time lags between the continuum emission of quasars at different wavelengths, based on more than four years of multi-band ($g$, $r$, $i$, $z$) light-curves in the Pan-STARRS Medium Deep Fields. As photons from different bands emerge from different radial ranges in the accretion disk, the lags constrain …