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 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000cxo..prop..661m&link_type=abstract

Chandra Proposal ID #02700421

Computer Science

Chandra Proposal Id #02700421

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 QSO is being monitored from the ground regularly to ascertain the onset of a microlensing event. As it occurs, we will measure X-ray spectral variations with Chandra and compare with those taken after the event. Since a small region of the QSO accretion disk is strongly magnified during the event, we will be able to limit the size of its X-ray emitting regions and the mass contained on scales of several AUs. Together with ground-based telescopes and with HST (TOO observation approved), we will also be able to resolve the QSO emission regions at multiple wavelengths and thus critically test AGN accretion disk theories.

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