SourceCatalog4FGL

class gammapy.catalog.SourceCatalog4FGL(filename='$GAMMAPY_DATA/catalogs/fermi/gll_psc_v32.fit.gz')

Bases: gammapy.catalog.core.SourceCatalog

Fermi-LAT 4FGL source catalog.

• https://arxiv.org/abs/1902.10045 (DR1)

• https://arxiv.org/abs/2005.11208 (DR2)

• https://arxiv.org/abs/2201.11184 (DR3)

• https://arxiv.org/abs/2307.12546 (DR4)

By default we use the file of the DR4 initial release from https://fermi.gsfc.nasa.gov/ssc/data/access/lat/14yr_catalog/

One source is represented by SourceCatalogObject4FGL.

Attributes Summary

description
positions	Source positions as a SkyCoord object.
tag

Methods Summary

row_index(name)	Look up row index of source by name.
source_name(index)	Look up source name by row index.
to_models(**kwargs)	Create Models object from catalog.

Attributes Documentation

description = 'LAT 14-year point source catalog'

positions

Source positions as a SkyCoord object.

tag = '4fgl'

Methods Documentation

row_index(name)

Look up row index of source by name.

Parameters

namestr

Source name.

Returns

indexint

Row index of source in table.

source_name(index)

Look up source name by row index.

Parameters

indexint

Row index of source in table.

to_models(**kwargs)

Create Models object from catalog.