Skip to main content

The NASA/GSFC network is currently experiencing intermittent issues that affect our services. We are working on it and apologize for the inconvenience.
The offline tool hark (also on github) can be used to find and download data from the cloud.

Xspec Home Page


log10con: Constant in base 10 log units

This multiplicative model can be used to replace a linear normalization of a model by a base 10 logarithmic normalization. To use multiply the additive component by this model and freeze the normalization of the additive component at one.

The parameters is:

par1 log10fac : Constant factor in base 10 log