Looking Inside Quasars with Microlensing. Xinyu Dai 1 Christopher S. Kochanek 1 George Chartas 2 Nicholas D. Morgan 1 Gordon P. Garmire 2 ( 1 Ohio State Univ ., 2 Penn. State Univ.). Quasar Accretion Disk Sizes. Q2237. RXJ1131. X-Ray. 140 AU. 14 AU.
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Looking Inside Quasars with Microlensing Xinyu Dai 1 Christopher S. Kochanek 1 George Chartas 2 Nicholas D. Morgan 1 Gordon P. Garmire 2 (1Ohio State Univ., 2 Penn. State Univ.)
Quasar Accretion Disk Sizes Q2237 RXJ1131 X-Ray 140 AU 14 AU Shorter than from Uranus to Sun 5 times from Neptune to Sun Optical Distance to Earth Million billion AU
A C B G D Gravitational Lens RXJ1131-1231 HST image of RXJ1131, the central object is a galaxy, which acts as a lens. The images A-D (three on top, one on bottom) are four images of the same quasar.
Microlensing Magnification Pattern We know the sizes of these patterns. These patterns are just like rulers, and we use these rulers to measure the size of the quasar accretion disk.