make_catalog_random_positions_sphere¶
-
gammapy.astro.population.make_catalog_random_positions_sphere(size, center='Earth', distance=<Quantity [0., 1.] Mpc>, random_state='random-seed')[source]¶ Sample random source locations in a sphere.
This can be used to generate an isotropic source population to represent extra-galactic sources.
Parameters: - size : int
Number of sources
- center : {‘Earth’, ‘Milky Way’}
Sphere center
- distance :
Quantitytuple Distance min / max range.
- random_state : {int, ‘random-seed’, ‘global-rng’,
RandomState} Defines random number generator initialisation. Passed to
get_random_state.
Returns: - catalog :
Table Source catalog with columns:
- RAJ2000, DEJ2000 (deg)
- GLON, GLAT (deg)
- Distance (Mpc)