Time Delays and Quasar Structure in Two Lensed Quasars with Significant Microlensing

Details Time Delays and Quasar Structure in Two Lensed Quasars with Significant Microlensing Time Delays and Quasar Structure in Two Lensed Quasars with Significant Microlensing

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.4525e&link_type=abstract

American Astronomical Society, AAS Meeting #211, #45.25; Bulletin of the American Astronomical Society, Vol. 39, p.800

Astronomy and Astrophysics

Astronomy

Scientific paper

We employ a Bayesian Monte Carlo method to simultaneously estimate the time delays, accretion disk structure, and associated uncertainties for two lensed quasars undergoing significant microlensing. For the system HE1104-1805, we measure a time delay of ΔtAB = tA - tB = 162.2-5.9+6.3 days and a disk size of log(rs/cm) = 15.6-0.5+0.4 at 0.211 μm in the rest frame. These values are consistent with earlier estimates but have larger uncertainties. For the system QJ0158-4325, we are unable to measure an accurate time delay, and our analysis suggests a sense for the delay opposite to that predicted. We do, however, successfully measure an accretion disk size of log(rs/cm) = 14.8 ± 0.3 at a rest-frame wavelength of 0.306 μm.

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