Thierry Louge / gammalib

Commit 0501adce6e3e298065f4907ef3ef45789d793db4

Authored by Jürgen Knödlseder
1 parent a364fd37

Correct spectral unit information for diffuse constant source in user manual (#1557)

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Showing 1 changed file with 7 additions and 5 deletions
doc/source/users/user_manual/modules/model.rst
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... ... @@ -82,27 +82,32 @@ morphology of the source.
82 82 It satisfies
83 83  
84 84 .. math::
85   - \int_{\Omega} M_{\rm spatial}(\alpha,\delta|E,t) d\Omega = 1
  85 + \int_{\Omega} M_{\rm spatial}(\alpha,\delta|E,t) \, d\Omega = 1
86 86  
87 87 for all :math:`E` and :math:`t`, hence the spatial component does not
88 88 impact the spatially integrated spectral and temporal properties of the
89 89 source (the integration is done here over the spatial parameters
90 90 :math:`\alpha` and :math:`\delta` in a spherical coordinate system).
  91 +The units of the spatial model component are
  92 +:math:`[M_{\rm spatial}] = {\rm sr}^{-1}`.
91 93  
92 94 The spectral model component describes the spatially integrated time
93 95 dependent spectral distribution of the source.
94 96 It satisfies
95 97  
96 98 .. math::
97   - \int_{E} M_{\rm spectral}(E | t) dE = \Phi
  99 + \int_{E} M_{\rm spectral}(E | t) \, dE = \Phi
98 100  
99 101 for all :math:`t`, where :math:`\Phi` is the spatially and spectrally
100 102 integrated total source flux. The spectral component does not impact
101 103 the temporal properties of the integrated flux :math:`\Phi`.
  104 +The units of the spectral model component
  105 +are :math:`[M_{\rm spectral}] = {\rm cm}^{-2} {\rm s}^{-1} {\rm MeV}^{-1}`.
102 106  
103 107 The temporal model component describes the relative variation of the
104 108 source flux with respect to the mean value given by the spectral model
105 109 component.
  110 +The temporal model component is unit less.
106 111  
107 112  
108 113 Spatial components
... ... @@ -383,9 +388,6 @@ differential flux values.
383 388 The energy values are assumed to be in units of MeV, the flux values are
384 389 normally assumed to be in units of
385 390 :math:`{\rm cm}^{-2} {\rm s}^{-1} {\rm MeV}^{-1}`.
386   -The only exception to this rule is the isotropic diffuse model
387   -:doxy:`GModelSpatialDiffuseConst` for which the flux values are given
388   -in units of :math:`{\rm cm}^{-2} {\rm s}^{-1} {\rm MeV}^{-1} {\rm sr}^{-1}`.
389 391  
390 392 The only parameter of the model is a multiplicative normalization:
391 393  
... ...