Alexander Ziegler / gammalib

Commit 0501adce6e3e298065f4907ef3ef45789d793db4

Authored by Jürgen Knödlseder
1 parent a364fd37

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

Inline Side-by-side
Showing 1 changed file with 7 additions and 5 deletions
doc/source/users/user_manual/modules/model.rst
  View file @0501adc
@@ -82,27 +82,32 @@ morphology of the source. @@ -82,27 +82,32 @@ morphology of the source.
82 It satisfies 82 It satisfies
83 83
84 .. math:: 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 for all :math:`E` and :math:`t`, hence the spatial component does not 87 for all :math:`E` and :math:`t`, hence the spatial component does not
88 impact the spatially integrated spectral and temporal properties of the 88 impact the spatially integrated spectral and temporal properties of the
89 source (the integration is done here over the spatial parameters 89 source (the integration is done here over the spatial parameters
90 :math:`\alpha` and :math:`\delta` in a spherical coordinate system). 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 The spectral model component describes the spatially integrated time 94 The spectral model component describes the spatially integrated time
93 dependent spectral distribution of the source. 95 dependent spectral distribution of the source.
94 It satisfies 96 It satisfies
95 97
96 .. math:: 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 for all :math:`t`, where :math:`\Phi` is the spatially and spectrally 101 for all :math:`t`, where :math:`\Phi` is the spatially and spectrally
100 integrated total source flux. The spectral component does not impact 102 integrated total source flux. The spectral component does not impact
101 the temporal properties of the integrated flux :math:`\Phi`. 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 The temporal model component describes the relative variation of the 107 The temporal model component describes the relative variation of the
104 source flux with respect to the mean value given by the spectral model 108 source flux with respect to the mean value given by the spectral model
105 component. 109 component.
  110 +The temporal model component is unit less.
106 111
107 112
108 Spatial components 113 Spatial components
@@ -383,9 +388,6 @@ differential flux values. @@ -383,9 +388,6 @@ differential flux values.
383 The energy values are assumed to be in units of MeV, the flux values are 388 The energy values are assumed to be in units of MeV, the flux values are
384 normally assumed to be in units of 389 normally assumed to be in units of
385 :math:`{\rm cm}^{-2} {\rm s}^{-1} {\rm MeV}^{-1}`. 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 The only parameter of the model is a multiplicative normalization: 392 The only parameter of the model is a multiplicative normalization:
391 393