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Source catalogs

gammapy.catalog provides convenient access to common gamma-ray source catalogs.

  • hgps / SourceCatalogHGPS - H.E.S.S. Galactic plane survey (HGPS)
  • gamma-cat / SourceCatalogGammaCat - An open catalog of gamma-ray sources
  • 3fgl / SourceCatalog3FGL - LAT 4-year point source catalog
  • 4fgl / SourceCatalog4FGL - LAT 8-year point source catalog
  • 2fhl / SourceCatalog2FHL - LAT second high-energy source catalog
  • 3fhl / SourceCatalog3FHL - LAT third high-energy source catalog
  • 2hwc / SourceCatalog2HWC - 2HWC catalog from the HAWC observatory
  • 3hwc / SourceCatalog3HWC - 3HWC catalog from the HAWC observatory

For each catalog, a SourceCatalog class is provided to represent the catalog table, and a matching SourceCatalogObject class to represent one catalog source and table row.

The main functionality provided is methods that map catalog information to ~gammapy.modeling.models.SkyModel, ~gammapy.modeling.models.SpectralModel, ~gammapy.modeling.models.SpatialModel, ~gammapy.estimators.FluxPoints and ~gammapy.estimators.LightCurve objects.

gammapy.catalog is independent from the rest of Gammapy. The typical use cases are to compare your results against previous results in the catalogs (e.g. overplot a spectral model), or to create initial source models for certain energy bands and sky regions.

Using gammapy.catalog

gammapy.catalog.SourceCatalog3FHL

gammapy.catalog.SourceCatalogGammaCat