Lorimer2006

class gammapy.astro.population.Lorimer2006

Bases: Fittable1DModel

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

\[f(r) = A \left( \frac{r}{r_{\odot}} \right) ^ B \exp \left[ -C \left( \frac{r - r_{\odot}}{r_{\odot}} \right) \right]\]

Formula (10) in [1].

Parameters:

amplitudefloat

See model formula.

Bfloat

See model formula.

Cfloat

See model formula.

See also

CaseBattacharya1998, Paczynski1990, YusifovKucuk2004, Lorimer2006

YusifovKucuk2004B, FaucherKaspi2006

References

[1]

Lorimer et al. (2006), “The Parkes Multibeam Pulsar Survey - VI. Discovery and timing of 142 pulsars and a Galactic population analysis”

Attributes Summary

B
C
amplitude
evolved
param_names	Names of the parameters that describe models of this type.

Methods Summary

evaluate(r, amplitude, B, C)

Evaluate model.

Attributes Documentation

B

C

amplitude

evolved = True

param_names = ('amplitude', 'B', 'C')

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.

Methods Documentation

static evaluate(r, amplitude, B, C)

Evaluate model.

__init__(amplitude=1, B=1.9, C=5.0, **kwargs)

classmethod __new__(*args, **kwargs)