Microlensing Measurements of the X-ray Continuum Emitting Region of the Gravitational Lens SDSS0924+0219
Abstract
Microlensing offers a unique way to constrain the physical extent of different emission regions in a lensed quasar, putting to test various accretion and continuum emission models. We perform a joint microlensing analysis using six Chandra observations (spanning six years) of the lensed quasar SDSS 0924+0219 in two energy bands (spanning 0.4-8.0 keV), in which X-ray microlensing variability is detected with high confidence, and high-cadence r-band monitoring (spanning eight years). Our joint microlensing analysis provides robust constraints on the extent of the X-ray continuum emission region and the accretion disk radius, disfavoring models involving an extended X-ray corona.
- Publication:
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American Astronomical Society Meeting Abstracts #223
- Pub Date:
- January 2014
- Bibcode:
- 2014AAS...22315009M