Kernel for Psf phi angle integration used for stacked analysis. More...
#include <GCTAResponse_helpers.hpp>
Public Member Functions | |
| cta_psf_radial_kern_phi (const GModelSpatialRadial *model, const GEnergy &srcEng, const GTime &srcTime, const double &sin_fact, const double &cos_fact) | |
| double | eval (const double &phi) |
| Kernel for azimuthal radial model integration. | |
 Public Member Functions inherited from GFunction | |
| GFunction (void) | |
| Void constructor. | |
| GFunction (const GFunction &function) | |
| Copy constructor. | |
| virtual | ~GFunction (void) |
| Destructor. | |
| GFunction & | operator= (const GFunction &function) |
| Assignment operator. | |
Protected Attributes | |
| const GModelSpatialRadial * | m_model |
| Radial model. | |
| GEnergy | m_srcEng |
| True photon energy. | |
| GTime | m_srcTime |
| True photon arrival time. | |
| double | m_sin_fact |
| sin(delta)*sin(delta_mod) | |
| double | m_cos_fact |
| cos(delta)*cos(delta_mod) | |
Additional Inherited Members | |
| Protected Member Functions inherited from GFunction | |
| void | init_members (void) |
| Initialise class members. | |
| void | copy_members (const GFunction &function) |
| Copy class members. | |
| void | free_members (void) |
| Delete class members. | |
Detailed Description
Kernel for Psf phi angle integration used for stacked analysis.
Definition at line 1181 of file GCTAResponse_helpers.hpp.
Constructor & Destructor Documentation
◆ cta_psf_radial_kern_phi()
|
inline |
Definition at line 1183 of file GCTAResponse_helpers.hpp.
Member Function Documentation
◆ eval()
|
virtual |
Kernel for azimuthal radial model integration.
- Parameters
-
[in] phi Azimuth angle (radians).
- Returns
- Radial model value.
Computes the value of the radial model at the position \((\delta,\phi)\) given in point spread function coordinates. The \(\theta\) angle of the radial model is computed using
\[ \theta = \arccos \left( \cos \delta \cos \zeta + \sin \delta \sin \zeta \cos \phi \right) \]
where \(\delta\) is the angle between true and measured photon direction, \(\zeta\) is the angle between model centre and measured photon direction, and \(\phi\) is the azimuth angle with respect to the measured photon direction, where \(\phi=0\) corresponds to the connecting line between model centre and measured photon direction.
Implements GFunction.
Definition at line 1914 of file GCTAResponse_helpers.cpp.
References GModelSpatialRadial::eval(), gammalib::is_infinite(), gammalib::is_notanumber(), m_cos_fact, m_model, m_sin_fact, m_srcEng, m_srcTime, gammalib::rad2deg, and GModelSpatialRadial::theta_max().
Member Data Documentation
◆ m_cos_fact
|
protected |
cos(delta)*cos(delta_mod)
Definition at line 1199 of file GCTAResponse_helpers.hpp.
Referenced by eval().
◆ m_model
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protected |
◆ m_sin_fact
|
protected |
sin(delta)*sin(delta_mod)
Definition at line 1198 of file GCTAResponse_helpers.hpp.
Referenced by eval().
◆ m_srcEng
|
protected |
◆ m_srcTime
|
protected |
True photon arrival time.
Definition at line 1197 of file GCTAResponse_helpers.hpp.
Referenced by eval().
The documentation for this class was generated from the following files:
- inst/cta/src/GCTAResponse_helpers.hpp
- inst/cta/src/GCTAResponse_helpers.cpp
