make_catalog_random_positions_sphere

gammapy.astro.population.make_catalog_random_positions_sphere(size=100, distance_min='0 pc', distance_max='1 pc', random_state='random-seed')

Sample random source locations in a sphere.

This can be used to generate an isotropic source population in a sphere, e.g. to represent extra-galactic sources.

Parameters:

sizeint, optional

Number of sources. Default is 100.

distance_min, distance_maxQuantity, optional

Minimum and maximum distance. Default is “0 pc” and “1 pc”, respectively.

random_state{int, ‘random-seed’, ‘global-rng’, RandomState}

Defines random number generator initialisation. Default is “random-state”. Passed to get_random_state.

Returns:

catalogTable

Table with 3D position spherical coordinates. Columns: lon (deg), lat (deg), distance(pc).