Bilby pipelines¶

Bilby with IMRPhenomXPHM¶

This was the default analysis setup for the O3 catalog runs which were used in the GWTC-2.1 and GWTC-3 catalog papers.

- Prod0:
    pipeline: bilby
    approximant: IMRPhenomXPHM
    status: ready

likelihood¶

These settings affect the behaviour of the bilby likelihood module.

marginalization

This section takes a list of types of marginalization to apply to the analysis (see below for an example of the syntax). distance

Activates distance marginalization.

phase

Activates phase marginalization.

time

Activates time marginalization

roq

This section allows ROQs to be defined for the likelihood function. folder

The location of the ROQs. Defaults to None.

scale factor

The scale factor of the ROQs. Defaults to 1.

kwargs

Additional keyword arguments to pass to the likelihood function in the form of a YAML or JSON format dictionary. Defaults to None.

sampling¶

The sampling section of the ledger can be used to specify both the bilby sampler which should be used, and the settings for that sampler.

sampler

The name of the sampler which should be used. Defaults to dynesty. A full list of supported values can be found in the bilby documentation, but include dynesty, emcee, and nessai.

seed

The random seed to be used for sampling. Defaults to None.

parallel jobs

The number of parallel jobs to be used for sampling. Defaults to 4.

sampler kwargs

Sampler-specific keyword arguments. These should be provided as a dictionary in either YAML or JSON dictionary (assosciative array) format. Defaults to “{‘nlive’: 2000, ‘sample’: ‘rwalk’, ‘walks’: 100, ‘nact’: 50, ‘check_point_delta_t’:1800, ‘check_point_plot’:True}”