uvex_transients.transients.base.ExtragalacticTransient.rate_shape

abstractmethod ExtragalacticTransient.rate_shape(z: float | NDArray[float64]) → float | NDArray[float64]

Compute the dimensionless redshift shape \(f(z)\) of the comoving event rate.

Must be NumPy-vectorized (accept and return an array elementwise when z is an array) – event_rate (and, through it, integrated_rate) evaluates this once, across the whole redshift_grid, not in a per-point loop. By convention (not enforced) \(f(0)=1\), making rate the local volumetric rate; see Yield Statistics.

Parameters:

z (float or numpy.ndarray) – Redshift(s) at which to evaluate the rate shape.

Returns:

The dimensionless rate shape, \(f(z)\).

Return type:

float or numpy.ndarray