Abstract: GalSim is a fast, modular software package for simulation of astronomical images. Though its primary purpose is for tests of weak lensing analysis methods, it can be used for other purposes. GalSim allows galaxies and PSFs to be represented in a variety of ways, and can apply shear, magnification, dilation, or rotation to a galaxy profile including lensing-based models from a power spectrum or NFW halo profile. It can write images in regular FITS files, FITS data cubes, or multi-extension FITS files. It can also compress the output files using various compressions including gzip, bzip2, and rice. The user interface is in python or via configuration scripts, and the computations are done in C++ for speed.
Credit: Rowe, Barney; Jarvis, Mike; Mandelbaum, Rachel
Reason: Updated code entry.
- The Github repository points to a different arXiv entry (http://arxiv.org/abs/1407.7676) that resolves (only VERY recently) to an Astronomy & Computing article (http://dx.doi.org/10.1016/j.ascom.2015.02.002).
- How was the "credit" determined for this entry? Interestingly, the current order matches the 1st three authors of the A&C article I list above, but not the github contributors nor the extant arXiv link.
If there are errors in the record -- we email authors asking them to check for errors after a record has been created -- we correct the record. For information that may be ephemeral, we hope authors keep their sites up-to-date with that information, and if they'd like to post updates to the code thread here, well, that's a major reason for having the thread!