MulensModel.mulensobjects.mulenssystem module¶

class MulensModel.mulensobjects.mulenssystem.MulensSystem(lens=None, source=None, mu_rel=None)¶

A microlensing system consisting of a lens and a source.

lens¶: A Lens object. Physical properties of the lens. Note: lens mass must be in solMasses.

mu_rel¶

astropy.Quantity

Relative proper motion between the source and lens stars. If set as a float, units are assumed to be mas/yr.

t_E¶

astropy.Quantity

The Einstein crossing time (in days). If set as a float, assumes units are in days.

pi_rel¶

astropy.Quantity, read-only

The source-lens relative parallax in milliarcseconds.

pi_E¶

float, read-only

The Einstein ring radius. It’s equal to pi_rel / theta_E. Dimensionless.

theta_E¶

astropy.Quantity, read-only

The angular Einstein Radius in milliarcseconds.

r_E¶

astropy.Quantity, read-only

The physical size of the Einstein Radius in the Lens plane (in AU).

r_E_tilde¶

astropy.Quantity, read-only

The physical size of the Einstein Radius projected onto the Observer plane (in AU).

plot_magnification(u_0=None, alpha=None, **kwargs)¶

Plot the magnification curve for the lens. u_0 must always be specified. If the lens has more than one body, alpha must also be specified.

Parameters :

u_0: float: Impact parameter between the source and the lens (as a fraction of the Einstein ring)
alpha: astropy.Quantity, float: If float then degrees are assumed as a unit. See MulensModel.modelparameters.ModelParameters.alpha
**kwargs:: See MulensModel.model.Model.plot_magnification()

plot_caustics(n_points=5000, **kwargs)¶

Parameters :