Bpow - Broken Power Law

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===Fitting with Bpow===
===Fitting with Bpow===
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There are four free parameters that are allowed to vary when using Bpow to fit the non-thermal portion of a spectrum. In practice, a[1], the negative power law index below the break energy is set to -1.5 and fixed.  
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There are four free parameters that are allowed to vary when using Bpow to fit the non-thermal portion of a spectrum. In practice, a[1], the negative power law index below the break energy is set to -1.5 and fixed.
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[[Image:bpow.jpg|center|thumb|600px|A broken power law fit to the count flux spectrum (top panel) and the photon flux spectrum (bottom panel)]]
[[Category:Software]]
[[Category:Software]]

Revision as of 19:22, 14 July 2009

Contents

Broken Power Law

Introduction

The broken power law component models the non-thermal portion of the spectrum for a selected time interval during a flare. It fits the spectrum above approximately 25keV with a broken power law, normalized to the value of the count flux at 50keV.

Parameters


Fitting with Bpow

There are four free parameters that are allowed to vary when using Bpow to fit the non-thermal portion of a spectrum. In practice, a[1], the negative power law index below the break energy is set to -1.5 and fixed.

A broken power law fit to the count flux spectrum (top panel) and the photon flux spectrum (bottom panel)
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