fetch_fermi_extended_sources

gammapy.catalog.fetch_fermi_extended_sources(catalog)[source]

Fetch Fermi catalog extended source images.

Reference: http://fermi.gsfc.nasa.gov/ssc/data/access/lat/.

Extended source are available for the following Fermi catalogs:

  • 3FGL Catalog : LAT 4-year Point Source Catalog
  • 2FGL Catalog : LAT 2-year Point Source Catalog
  • 1FHL Catalog : First Fermi-LAT Catalog of Sources above 10 GeV
Parameters:

catalog : {‘3FGL’, ‘2FGL’, ‘1FHL’}

Specifies which catalog extended sources to return.
Returns:

hdu_list : HDUList

FITS HDU list of FITS ImageHDUs for the extended sources.

Examples

>>> from gammapy.catalog import fetch_fermi_extended_sources
>>> sources = fetch_fermi_extended_sources('2FGL')
>>> len(sources)
12