Changes between Version 103 and Version 104 of DatabaseBasedAnalysis/Spectrum


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Timestamp:
12/05/19 10:38:48 (6 years ago)
Author:
tbretz
Comment:

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  • DatabaseBasedAnalysis/Spectrum

    v103 v104  
    22
    33The differential flux \(\phi(E)\) per area, time and energy interval is defined as
    4 \[\phi(E) = \frac{dN}{dA\cdot dt\cdot dE}\]
     4[0] \[\phi(E) = \frac{dN}{dA\cdot dt\cdot dE}\] [0]
    55
    66Often \(\phi(E)\) is also referred to as \(\frac{dN}{dE}\) as observation time and effective collection area is a constant. The effective area is then defined as \(A_\textrm{eff}(E)=\epsilon(E)\cdot A_0\). Note that at large distances \(R_0\) the efficiency \(\epsilon(R_0)\) vanishes, so that the effective area is an (energy dependent) constant while \(A_0=\pi R_0^2\) and the efficiency \(\epsilon(E)\) are mutually dependent.