MICROLENSING EVIDENCE THAT A TYPE 1 QUASAR IS VIEWED FACE-ON

Shawn Poindexter, Christopher S. Kochanek
2010 Astrophysical Journal  
Using a microlensing analysis of 11-years of OGLE V-band photometry of the four image gravitational lens Q2237+0305, we measure the inclination i of the accretion disk to be cos i > 0.66 at 68% confidence. Very edge on (cos i < 0.39) solutions are ruled out at 95% confidence. We measure the V-band radius of the accretion disk, defined by the radius where the temperature matches the monitoring band photon emission, to be R_V = 5.8 (+3.8) (-2.3) x 10^15 cm assuming a simple thin disk model and
more » ... luding the uncertainties in its inclination. The projected radiating area of the disk remains too large to be consistent with the observed flux for a T proportional to R^-3/4 thin disk temperature profile. There is no strong correlation between the direction of motion (peculiar velocity) of the lens galaxy and the orientation of the disk.
doi:10.1088/0004-637x/712/1/668 fatcat:mz6rc7pu7jcwvntzhn4fnhjp5a