3pow - Triple Power Law: Difference between revisions
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===Fitting with 3pow=== | ===Fitting with 3pow=== | ||
[[Category:Fit Function Components]] | [[Category:Fit Function Components]] | ||
Revision as of 15:34, 9 December 2009
Triple Power Law
Introduction
The triple broken power law can be used to model the photon spectrum when there are two breaks in the non-thermal portion of the spectrum
Parameters
3pow - Triple broken power-law function with/without discontinuities in the derivatives
- a[0] - normalization at epivot, photon flux of first power-law at epivot
- a[1] - negative power law index below break energy one
- a[2] - break energy one (keV)
- a[3] - negative power law index above break energy two, below break energy two
- a[4] - break energy two (keV)
- a[5] - negative power law index above break energy two