Min / Max in PL index for Galactic spectrum correction

[sfegan]

make4FGLxml/LATSourceModel/src/LATSourceModel/SourceList.py

Line 477 in d222bdb

galactic_spectrum=Spectrum(model='PowerLaw',Prefactor=1,Index=0,Scale=100,Prefactor_free=True,

The PL model that corrects the Galactic diffuse model is created with an index of zero (as it should be), but it has limits on the index of [0,10] .. which means that the index can never allow harder spectra than zero. I would suggest the appropriate limits should be [-1,1] or something like that, to allow the correction to swing both positive and negative from the nominal value.

[physicsranger]

Good catch! Looking at XML files produced from my older version, I did have the min and max matched what you suggested, but in my move to the new code I forgot to ensure that this was done the same way. I've pushed a change and will upload it to PyPI soon and create a new release tag. (I just have to sort out my PyPI password to verify my email).

[physicsranger]

This has been implemented in the latest release (v1.10.10). The release has been created on GitHub and uploaded to PyPI, available via:

python3 -m pip install --upgrade LATSourceModel