FaucherKaspi2006VelocityMaxwellian#

class gammapy.astro.population.FaucherKaspi2006VelocityMaxwellian[source]#

Bases: Fittable1DModel

Maxwellian pulsar velocity distribution.

\[f(v) = A \sqrt{ \frac{2}{\pi}} \frac{v ^ 2}{\sigma ^ 3 } \exp \left(-\frac{v ^ 2}{2 \sigma ^ 2} \right)\]
Parameters:
amplitudefloat

Value of the integral.

sigmafloat

Velocity parameter (km s^-1).

References

Attributes Summary

amplitude

param_names

Names of the parameters that describe models of this type.

sigma

Methods Summary

evaluate(v, amplitude, sigma)

One dimensional velocity model function.

Attributes Documentation

amplitude#
param_names = ('amplitude', 'sigma')#

Names of the parameters that describe models of this type.

The parameters in this tuple are in the same order they should be passed in when initializing a model of a specific type. Some types of models, such as polynomial models, have a different number of parameters depending on some other property of the model, such as the degree.

When defining a custom model class the value of this attribute is automatically set by the Parameter attributes defined in the class body.

sigma#

Methods Documentation

static evaluate(v, amplitude, sigma)[source]#

One dimensional velocity model function.

__init__(amplitude=1, sigma=265, **kwargs)[source]#
classmethod __new__(*args, **kwargs)#