3 papers
astro-ph1995
Separating intrinsic and microlensing variability using parallax measurements
S. V. H. Haugan
In gravitational lens systems with 3 or more resolved images of a quasar, the intrinsic variability may be unambiguously separated from the microlensing variability through paralla…
astro-ph1995
Simulation of microlensing lightcurves by combining contouring and rayshooting
S. V. H. Haugan
The contouring methods described by Lewis et al. (1993) and Witt (1993) are very efficient and elegant for obtaining the magnification of a point source moving along a straight tra…
astro-ph1995
The microlensing events in Q2237+0305A: No case against small masses/large sources
S. V. H. Haugan
It is demonstrated that the 1988-90 microlensing events in image A of Q2237+0305 reported by Racine (1992) do not exclude microlensing models with very low average mass, making the…