SourceCatalog4FGL

class gammapy.catalog.SourceCatalog4FGL(filename='$GAMMAPY_DATA/catalogs/fermi/gll_psc_v28.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)

By default we use the file of the DR3 initial release from https://fermi.gsfc.nasa.gov/ssc/data/access/lat/12yr_catalog/

One source is represented by SourceCatalogObject4FGL.

Attributes Summary

description
positions	Source positions (SkyCoord).
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 catalogue

Attributes Documentation

description = 'LAT 8-year point source catalog'

positions

Source positions (SkyCoord).

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 catalogue