Page Comparison

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• To compare the PS1MD fields (those above) to the SDSS fields, I generated a plot for just the SDSS SN and fit a single mode Gaussian to them 
  • The fitting information is like that above, with similar constraints
  • The fit did select a dip at a similar position to that noted above (though somewhat narrower).  This data mays also show evidence of an earlier dip (around z ~0.18) that I do not note in the PS1MD fields above (perhaps because of insufficient sampling) 
    

• In light of the above, I have attempted to fit the PS1MD, SDSS, and SNLS data (the three sets with numerous SN) simultaneously with a single function
  • I started with a sine function of the form: res(z) = A * sin(omega * x + phi) + shift 
    • With A, omega, phi allowed to vary, but forced to be the same between all data sets
    • shift is allowed to vary independently 
  • I ran the fit 7 times for each of the different possible combinations of data (each data set alone, the 3 2-set combinations, and all three simultaneously). 
  • The plots show both unbinned data (top panel) and binned data (bottom panel).  The fits are always run on the unbinned data.  
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