Schechter

class sherpa.astro.models.Schechter(name='schechter')

Bases: sherpa.models.model.ArithmeticModel

One-dimensional Schecter model function.

This model is for integrated data grids only.

alpha

The slope of the power-law component.

ref

The reference position, which controls the switch from the power-law to the exponential.

norm

The normalisation of the model.

Notes

The functional form of the model for grids is:

f(xlo,xhi) = norm * (xlo / ref)^alpha
                  * exp(-xlo / ref)
                  * (xhi - xlo) / ref

and for points the model is:

f(x) = 0

Attributes Summary

thawedparhardmaxes
thawedparhardmins
thawedparmaxes
thawedparmins
thawedpars

Methods Summary

apply(outer, \*otherargs, \*\*otherkwargs)
calc(pars, xlo, \*args, \*\*kwargs)
get_center()
guess(dep, \*args, \*\*kwargs)
reset()
set_center(\*args, \*\*kwargs)
startup()
teardown()

Attributes Documentation

thawedparhardmaxes

thawedparhardmins

thawedparmaxes

thawedparmins

thawedpars

Methods Documentation

apply(outer, *otherargs, **otherkwargs)

calc(pars, xlo, *args, **kwargs)

get_center()

guess(dep, *args, **kwargs)

reset()

set_center(*args, **kwargs)

startup()

teardown()