An X-Ray Microlensing Test of the Au-Scale Central Structure of the Quadruple Quasar 2237+0305

Details An X-Ray Microlensing Test of the Au-Scale Central Structure of the Quadruple Quasar 2237+0305 An X-Ray Microlensing Test of the Au-Scale Central Structure of the Quadruple Quasar 2237+0305

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cxo..prop.2193m&link_type=abstract

Chandra Proposal ID #08700077

Physics

Chandra Proposal Id #08700077

Scientific paper

We propose Chandra observations of the gravitationally lensed quasar Q2237+0305 during a microlensing event to reveal its AU scale central structure. The quasar is being monitored from the ground regularly to ascertain the onset of the event. As it occurs, we will measure X-ray spectral variations with Chandra and compare with those taken before and after the event. Since a small region of the quasar accretion disk is strongly magnified during the event, we will be able to limit the mass contained on scales of several AUs and to probe the physical properties of X-ray emitting gas in the vicinity of the black hole. Together with ground-based telescopes, we can resolve the quasar emission regions at multiple wavelengths. This provide a critically test of quasar accretion disk theories.

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