Binary-lens model light curve plotter
With θ
E denoting the angular Einstein radius that refers
to the total mass of the lens system, the angular separation of its components
is given by d θ
E, while q is the secondory-to-primary
mass ratio. The lens components are oriented along the horizontal axis, with
the primary on the right.
The trajectory of the source on the sky relative to the centre of mass of
the lens system, which marks the coordinate origin, is
θ(τ) = [u0 (-sin α; cos α) +
τ
(cos α; sin &alpha)] θE, and its angular radius is ρ θE.
The sky region displayed is centred around (δ1; δ2
) θ
E, and
its width and height are 2Δ θ
E.
Please acknowledge the use of this tool and refer to
M. Dominik 2007, MNRAS 377, 1679.
© 2007 Martin Dominik