bbodyfreq

Context: models

Synopsis

A one-dimensional Blackbody model (frequency).

Syntax

bbodyfreq

Description

This model can be used when the independent axis is in frequency space.

Example

>>> create_model_component("bbodyfreq", "mdl")
>>> print(mdl)

Create a component of the bbodyfreq model and display its default parameters. The output is:

mdl
   Param        Type          Value          Min          Max      Units
   -----        ----          -----          ---          ---      -----
   mdl.T        thawed        1e+06         1000        1e+10           
   mdl.ampl     thawed            1            0  3.40282e+38

ATTRIBUTES

The attributes for this object are:

Attribute	Definition
T	The temperature if the blackbody, in Kelvin.
ampl	The amplitude of the blackbody component.

Notes

The blackbody emission is calculated as a function of frequency (v) using Wien's law (hv >> kT):

f(v) = ampl * 2 * h * v^3 * exp(-h * v / (k * T)) / c^2

where T is the blackbody temperature in Kelvin, h is Planck's constant, k is Boltzmann's constant, and c the speed of light.

Bugs

See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.