galpy.df.streamdf.pOparapar¶

streamdf.pOparapar(Opar, apar, tdisrupt=None)[source]¶

Return the probability of a given parallel (frequency,angle) offset pair.

Parameters:

Opar (numpy.ndarray or Quantity) – Parallel frequency offset.
apar (float or Quantity) – Parallel angle offset along the stream.
tdisrupt (float, optional) – Time since the start of the simulation at which the stream is disrupted (in galpy time units). If None, the value set at the initialization of the object is used.

Returns:

Probability of a given parallel (frequency,angle) offset pair.

Return type:

ndarray

Notes