Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21914604l&link_type=abstract
American Astronomical Society, AAS Meeting #219, #146.04
Astronomy and Astrophysics
Astronomy
Scientific paper
We have used the gravitational microlensing variability observed in the gravitationally lensed quasars SBS 0909+532 and SBS 1520+530 to measure the physical size of their continuum sources at optical and X-ray wavelengths using optical monitoring data from the United States Naval Observatory (USNO) in Flagstaff, Arizona and one epoch of X-ray imagery from the Chandrasekhar X-Ray Observatory archive. We have used a point-spread function modeling technique to measure the flux of the blended quasar components to yield a set of time-sequenced lightcurves, plots of the brightness of each image with respect to time. Using the lens astrometry and photometry measured from publicly available Hubble Space Telescope data, I have calculated models for the mass distribution in the lensing galaxy. The models have been used to generate magnification patterns for representative star fields in the lens galaxy. After generating the magnification patterns, I employed a Bayesian Monte Carlo microlensing analysis technique to simultaneously analyze the X- ray and optical observational data.
Hainline Laura
Harris Hugh
Landaal Zachary
Morgan Ciara
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