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− | [[File:Goes stix scatter polynomial 1oder v2.png|800px|thumb|none| Scatter plot of STIX counts (4 - 10 keV) versus GOES flux and as well as a linear fit and a polynomial fit to the data. ]] | + | [[File:Goes stix flux fit lms.png|800px|thumb|none| Scatter plot of STIX counts (4 - 10 keV) versus GOES and as well as a linear fit and a polynomial fit to the data. ]] |
| The GOES flux of a solar flare is estimated using<br> | | The GOES flux of a solar flare is estimated using<br> |
| flux=10^(p0+p1*x), <br> | | flux=10^(p0+p1*x), <br> |
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− | | + | [[File:Goes_background.png |600px|thumb|none| An example of estimated GOES flux background. ]] |
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− | The scatter plot can be also fitted with a polynomial function.
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− | [[File:Goes stix flux polynomial.png |400px|thumb|none| A polynomial fit to the data. Occulted flares were excluded. ]] | |
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− | [[File:Goes bkg.png |400px|thumb|none| GOES flux background estimation using algorithm described <a href="https://root.cern.ch/doc/v608/classTSpectrum.html#a56e15d1c36c7557b17d5f6d68fa315a7">here</a> ]]
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Latest revision as of 10:29, 21 January 2022
Scatter plot of STIX counts (4 - 10 keV) versus GOES and as well as a linear fit and a polynomial fit to the data.
The GOES flux of a solar flare is estimated using
flux=10^(p0+p1*x),
with x=log10(stix_peak_counts*r^2)
where p0, p1 are the parameters from the curve fit, peak_counts is the STIX QL LC peak
counts and r is the distance between the Sun and solar orbiter in units of au.
An example of estimated GOES flux background.