FaucherKaspi2006#

class gammapy.astro.population.FaucherKaspi2006[source]#

Bases: Fittable1DModel

Radial distribution of the birth surface density of pulsars in the galaxy.

\[f(r) = A \frac{1}{\sqrt{2 \pi} \sigma} \exp \left(- \frac{(r - r_0)^2}{2 \sigma ^ 2}\right)\]

Appendix B in [1].

Parameters:
amplitudefloat

See model formula.

r_0float

See model formula.

sigmafloat

See model formula.

See also

CaseBattacharya1998, Paczynski1990, YusifovKucuk2004, Lorimer2006
YusifovKucuk2004B, Exponential

References

Attributes Summary

amplitude

evolved

param_names

Names of the parameters that describe models of this type.

r_0

sigma

Methods Summary

evaluate(r, amplitude, r_0, sigma)

Evaluate model.

Attributes Documentation

amplitude#
evolved = False#
param_names = ('amplitude', 'r_0', '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.

r_0#
sigma#

Methods Documentation

static evaluate(r, amplitude, r_0, sigma)[source]#

Evaluate model.

__init__(amplitude=1, r_0=7.04, sigma=1.83, **kwargs)[source]#
classmethod __new__(*args, **kwargs)#