ZeroRadialVelocityPrior

class ssapy.correlate_tracks.ZeroRadialVelocityPrior(sigma=0.25)

Bases: object

Gaussian prior that v_R = 0.

Parameters:

sigma (float) – Prior standard deviation on np.dot(v, r) / |v| / |r|, dimensionless.

sigma

__call__(orbit)

Returns log prior probability of given orbit.

Methods Summary

__call__(orbit, distance[, chi])

Return log prior probability of given orbit.

Methods Documentation

__call__(orbit, distance, chi=False)

Return log prior probability of given orbit.

Parameters:

• orbit (Orbit) – The given orbit.

• chi (bool) – If True, return chi corresponding to log probability, rather than log probability.

Returns:

logprior – The log of the prior probability for given orbit.

Return type:

float