Changes between Version 102 and Version 103 of DatabaseBasedAnalysis/Spectrum
- Timestamp:
- 12/05/19 10:33:36 (6 years ago)
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DatabaseBasedAnalysis/Spectrum
v102 v103 7 7 8 8 For an observation with an effective observation time \(\Delta T\), this yields in a given Energy interval \(\Delta E\): 9 \[\phi( E) = \frac{1}{A_0\cdot \Delta T}\frac{N(\Delta E)}{\epsilon(\Delta E)\cdot \Delta E}\]9 \[\phi(\Delta E) = \frac{1}{A_0\cdot \Delta T}\frac{N(\Delta E)}{\epsilon(\Delta E)\cdot \Delta E}\] 10 10 11 For simplicity, in the following, \(\Delta E\) will be replaced by just \(E\) but always refers to to a given energy interval. If data is binned in a histogram, the relation between the bin center \(E\) and the corresponding interval \(\Delta E\) is not well defined. Resonable definitions are the bin center (usually in logarithmic bins) or the average energy.11 For simplicity, in the following, \(\Delta E\) will be replaced by just \(E\) but always refers to to a given energy interval. If data is binned in a histogram, the relation between the x-value for the bin \(E_\textrm{x}\) and the corresponding interval \(\Delta E_\textrm{x}\) is not well defined. Resonable definitions are the bin center (usually in logarithmic bins) or the average energy. 12 12 13 13 The total area \(A_0\) and the corresponding efficiency \(\epsilon(E)\) are of course only available for simulated data. For simulated data, \(A_0\) is the production area and \(\epsilon(E)\) the corresponding energy dependent efficiency of the analysis chain. For a given energy bin, the efficiency is then defined as