Microlensing a Quasar.s Accretion Disk

We propose a joint 6x30 ks Chandra and 6x40 ks XMMNewton monitoring campaign ofthe lens system RXJ1131 to reach the following goals: (1) Confirm and validate the microlensing method of constraining the spin and inclination angle of a z0.658 lensed quasar. (2) Identify the origin of the soft excess, and (3) compare these results to those obtained by employing the relativistic Fe linemethod. The Chandra observations are crucial in resolving the 4 images,unambiguously identifying a microlensing event, and providing the unlensedsource spectrum. XMMNewton has the required effective area to provideconstraints on the soft and hard reflection components originating from thedisk. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]