SIMTOI v1.0 screenshot
SIMTOI is developed by Dr Brian Kloppenborg of Georgia State University and distributed under an open source (GPL v3) license. If you encounter bugs, please file a report on the [issue tracker](https://github.com/bkloppenborg/simtoi/issues). If you have specific requests for additional features, models, or other enhancements, please send an email To Brian (contact information on the [SIMTOI project page](https://github.com/bkloppenborg/simtoi)). If you use SIMTOI for your work, please acknowledge it per the [guidelines on the project's webpage](https://github.com/bkloppenborg/simtoi#licensing-and-acknowledgements). ## Features For a complete, up-to-date list of features, see [SIMTOI's homepage on GitHub](https://github.com/bkloppenborg/simtoi) ### Stellar models * Uniform disk * Several limb darkening models including Claret (2000), Fields (2003), logarithmic, power law, quadratic, and square root. * Oblate spheroids with gravity darkening * Roche surfaces * Spots ### Astrophysical disks * Power law density profile in both radius and height (c.f. Pascucci et al. 2004) * Power law density profile in both radius and height with an exponential taper at large radii (c.f. Andrews et al. 2009) ### Model positioning * Static (x,y,z) * Keplerian orbit ### Supported data types: * Optical interferometric V2, T3 (amplitude and phase) * Broadband photometry ### Minimization Engines: * [Levmar](http://users.ics.forth.gr/~lourakis/levmar/) (Levenberg-Marquardt optimization algorithm) * Gridsearch * [MultiNest](http://ccpforge.cse.rl.ac.uk/gf/project/multinest/) (Bayesian nested sampling, model selection) ### Other features: * Live parameter updating, model rendering, and data computation. * Model animation * Command line options. Easily scripted using Python * Easily edited JSON save files * Runs locally on your computer (unlike JMMC's litpro) ## System requirements, downloading and installing SIMTOI is designed to be cross-platform compatible. It has been tested on several variants of GNU/Linux and on Mac OSX 10.8. Test on additional platforms are most welcomed. SIMTOI requires that your computer have a graphics processor that supports OpenCL 1.0 (or higher) and OpenGL 3.3 (or higher). Almost any discrete graphics card by nVidia or ATI/AMD will meet these requirements. Intel integrated graphics provided by Fourth generation Intel processors (i.e. i3/5/7-4xxx) is presently experimental. See [SIMTOI's homepage on GitHub](https://github.com/bkloppenborg/simtoi) for the latest requirements and installation instructions.