Gravitational Lensing of Distant Sources
Mark Boughen
"The aim of this project was to obtain and use a knowledge of gravitational lensing to develop a computer model to simulate lensing effects on distant sources. Each stage of the computer model development is covered in the report*, from initial ideas, through to testing the model using some of the latest gravitational lens observations.

It is my belief that this project has succeeded not only in producing a working simulation of a point mass gravitational lens system, but also in providing a challenge. There is great satisfaction to be gained from creating a computer program from scratch, and developing it into a working model, which can not only simulate basic lens theory, but can also reproduce the lensing effects of an, approximated, observed system.

It is hoped this computer model can help others to understand the theory and observations of gravitational lensing. Used as part of a lecture course, this program may help to convey basic principles which might otherwise be difficult to visualise."

Mark Boughen

"Gravitational Lensing of Distant Sources - A Thesis submitted in partial fulfilment of the Bachelor of Science Honours Degree in Astrophysics", 1998

G-LenS was reviewed in the June 2000 edition of the astronomy magazine 'Sky and Telescope'.  The 'Software Showcase' section describes the application and its uses.

Many people contacted me after the publication of this small article to ask for a copy of the software.

Updated: 5th June 2002