3pow - Triple Power Law: Difference between revisions

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[[Category:Fit Function Components]]

Latest revision as of 21:25, 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

Fitting with 3pow