GalSim: The modular galaxy image simulation toolkit

B. T.P. Rowe, M. Jarvis, R. Mandelbaum, G. M. Bernstein, J. Bosch, M. Simet, J. E. Meyers, T. Kacprzak, R. Nakajima, J. Zuntz, H. Miyatake, J. P. Dietrich, R. Armstrong, P. Melchior, M. S.S. Gill

Research output: Contribution to journalArticle

107 Scopus citations

Abstract

GalSim is a collaborative, open-source project aimed at providing an image simulation tool of enduring benefit to the astronomical community. It provides a software library for generating images of astronomical objects such as stars and galaxies in a variety of ways, efficiently handling image transformations and operations such as convolution and rendering at high precision. We describe the GalSim software and its capabilities, including necessary theoretical background. We demonstrate that the performance of GalSim meets the stringent requirements of high precision image analysis applications such as weak gravitational lensing, for current datasets and for the Stage IV dark energy surveys of the Large Synoptic Survey Telescope, ESA's Euclid mission, and NASA's WFIRST-AFTA mission. The GalSim project repository is public and includes the full code history, all open and closed issues, installation instructions, documentation, and wiki pages (including a Frequently Asked Questions section). The GalSim repository can be found at https://github.com/GalSim-developers/GalSim.

Original languageEnglish (US)
Pages (from-to)121-150
Number of pages30
JournalAstronomy and Computing
Volume10
DOIs
StatePublished - Apr 1 2015

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Computer Science Applications
  • Space and Planetary Science

Keywords

  • Cosmology: observations
  • Gravitational lensing
  • Methods: data analysis
  • Techniques: image processing

Fingerprint Dive into the research topics of 'GalSim: The modular galaxy image simulation toolkit'. Together they form a unique fingerprint.

  • Cite this

    Rowe, B. T. P., Jarvis, M., Mandelbaum, R., Bernstein, G. M., Bosch, J., Simet, M., Meyers, J. E., Kacprzak, T., Nakajima, R., Zuntz, J., Miyatake, H., Dietrich, J. P., Armstrong, R., Melchior, P., & Gill, M. S. S. (2015). GalSim: The modular galaxy image simulation toolkit. Astronomy and Computing, 10, 121-150. https://doi.org/10.1016/j.ascom.2015.02.002