#Welcome!

This project is a Python implementation of the general lens solver GravLens.

To build and install the package, type python setup.py build install. If you are developing, use python setup.py develop instead.

At this current version, this project does the following:

• Take the magnification function for given model(s) and compute the transformation of coordinates from the image plane to the source plane.
• Given a point in the source plane, find the exact position(s) in the image plane.
• Plot the results. (Sample images are given below!)

Supported Models

Fully Implemented:

• Alpha = 1 (Singular Isothermal Ellipsoid)
• Alpha = -1 (Plummer Model)
• General Alpha case
• NFW (Fortran Version)

Models that are not fully functional in this version:

• NFW (C version)

Not yet Implemented:

• NFW (Python Version)
• Truncated Models

Dependencies:

Make sure to install these libraries before running!

• SciPy
• NumPy
• matplotlib.pyplot
• numexpr
• pycallgraph (this library can be excluded if you are not interested in seeing runtimes in the demo, make sure to comment out the relevant lines in demos/example_run.py)

For the fortran files, you will need CUBPACK for the integrals. At this point of the project, this library is not bundled with this code. You must also compile the fortran files yourself, use the makecommand files in the folder for an example on how to compile the code.

#Images ##SIE ##Plummer - Alpha = -1 Case