diff --git a/doc/source/users/tutorials/1dc/first_fitting.rst b/doc/source/users/tutorials/1dc/first_fitting.rst index 6bd571b..e0eb99d 100644 --- a/doc/source/users/tutorials/1dc/first_fitting.rst +++ b/doc/source/users/tutorials/1dc/first_fitting.rst @@ -196,9 +196,32 @@ a maximum likelihood model fit. *Butterfly diagrams determined with ctbutterfly and spectral points determined with csspec for Src001 (red) and Src002 (blue)* Obviously, ``Src001`` has a spectral cut-off (red flux points) and hence is not -adequately described by a power law model. -Replacing the spectral model of ``Src001`` by an exponentially cut-off -power law improves the fit to the data, as illustrated by the figure below. +adequately described by a power law model. You should therefore replace the +power law in the +:ref:`model definition file ` +by an exponentially cutoff power law, as shown below: + +.. code-block:: xml + + + + + + + + + + + + + + + + ... + + +Fitting this model to the data improves the fit and the resulting butterfly +diagram now reasonably well follows the spectral points: .. figure:: first_spectrum_cutoff_stacked.png :width: 600px