Difference between revisions of "GOES Flux vs STIX counts"

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[[File:Stix goes fit cubic.png|800px|thumb|none|  Scatter plot of STIX counts (4 - 10 keV) versus GOES flux and histogram of STIX counts versus GOES flux as well as its cubic function fit.  STIX counts are background subtracted and multiplied by the squared distances between Solar Orbiter and the Sun.
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[[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.   ]]
1045 flares with Earth look-angles smaller than 90 degrees were selected. ]]
 
 
 
 
 
 
The GOES flux of a solar flare is estimated using<br>
 
The GOES flux of a solar flare is estimated using<br>
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flux=10^(p0+p1*x), <br>
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with x=log10(stix_peak_counts*r^2)<br>
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where p0, p1 are the parameters from the curve  fit, peak_counts is the STIX QL LC peak
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counts and r is the distance between the Sun and solar orbiter in units of au. <br>
  
flux=10^(p0+p1*x+p2**x^2+p3*x^3), <br>
 
  
with x=log10(stix_peak_counts*r^2)<br>
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[[File:Goes_background.png |600px|thumb|none| An example of estimated GOES flux background. ]]
 
 
where p0, p1, p2 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. <br>
 

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.