Defines a binary model based of two Gaussians. This is an explicit model based on the model_visibility_amplitude, model_closure_phase, and model_closure_amplitude classes. More...
#include "model/model_circular_binary.h"
Public Member Functions | |
| virtual size_t | size () const |
| virtual void | generate_model (std::vector< double > parameters) |
| virtual double | visibility_amplitude (datum_visibility_amplitude &d, double acc) |
| virtual double | closure_phase (datum_closure_phase &d, double acc) |
| virtual double | closure_amplitude (datum_closure_amplitude &d, double accuracy) |
 Public Member Functions inherited from model_visibility_amplitude | |
| virtual void | set_mpi_communicator (MPI_Comm comm) |
| Defines a set of processors provided to the model for parallel computation via an MPI communicator. Only facilitates code parallelization if the model computation is parallelized via MPI. | |
| Public Member Functions inherited from model_closure_phase | |
| virtual void | set_mpi_communicator (MPI_Comm comm) |
| Defines a set of processors provided to the model for parallel computation via an MPI communicator. Only facilitates code parallelization if the model computation is parallelized via MPI. | |
| Public Member Functions inherited from model_closure_amplitude | |
| virtual void | set_mpi_communicator (MPI_Comm comm) |
| Defines a set of processors provided to the model for parallel computation via an MPI communicator. Only facilitates code parallelization if the model computation is parallelized via MPI. | |
Private Member Functions | |
| std::complex< double > | complex_visibility (double u, double v, double t) |
| Computes the complex visibility for the model. | |
| double | get_obs_time (double t_lab) |
| Converts from lab time to the observer time, including the time delays. | |
| double | get_lab_frame_time (double t_obs) |
| Converts from observer time to the lab time, including the time delays. | |
| void | get_orbital_solution (double t_lab, double x1[2], double &v1, double &v1r, double x2[2], double &v2, double &v2r) |
| Computes and returns the locations, velocities, and line-of-sight velocities of the two binary components at a given lab time. | |
| double | doppler_factor (double v, double vr) const |
| Doppler factor g = gamma*(1-beta.n) | |
| double | gaussian_visibility (double u, double v, double sigma) const |
| Computes the visibility for a gaussian at (u,v) with size sigma and total intensity 1 Jy. | |
Private Attributes | |
| double | _I1 |
| Primary total intensity. | |
| double | _sigma1 |
| Primary std dev. | |
| double | _alpha1 |
| Primary spectral index. | |
| double | _I2 |
| Secondary total intensity. | |
| double | _sigma2 |
| Secondary std dev. | |
| double | _alpha2 |
| Secondary spectral index. | |
| double | _M |
| Total mass in Msun. | |
| double | _q |
| Mass ratio. | |
| double | _R |
| Orbital separation in cm. | |
| double | _D |
| Distance to source in cm. | |
| double | _Phi0 |
| Orbital phase offset. | |
| double | _mu |
| Cosine of inclination. | |
| double | _position_angle |
| Position angle. | |
| double | _Omega |
| Orbital angular velocity. | |
| double | _cosi |
| double | _sini |
Additional Inherited Members | |
| Protected Attributes inherited from model_visibility_amplitude | |
| MPI_Comm | _comm |
| Protected Attributes inherited from model_closure_phase | |
| MPI_Comm | _comm |
| Protected Attributes inherited from model_closure_amplitude | |
| MPI_Comm | _comm |
Detailed Description
The Gaussian blobs by their axis sizes and overall flux normalizations. Note that this is not derived from model_image because there is no meaning for the position angle.
Parameter list:
- parameters[0] ... Total, integrated flux in Jy for primary.
- parameters[1] ... Standard deviation of the Gaussian in radians of primary.
- parameters[2] ... Spectral index ( \(I_\nu \propto \nu^{-\alpha}\)) of primary.
- parameters[3] ... Total, integrated flux in Jy for secondary.
- parameters[4] ... Standard deviation of the Gaussian in radians of secondary.
- parameters[5] ... Spectral index ( \(I_\nu \propto \nu^{-\alpha}\)) of secondary.
- parameters[6] ... Total mass of binary in solar masses.
- parameters[7] ... Binary mass ratio (secondary/primary).
- parameters[8] ... Orbital separation in pc.
- parameters[9] ... Binary distance in Mpc.
- parameters[10] .. Phase offset of binary in radians.
- parameters[11] .. Cosine of the orbital angular momentum vector.
- parameters[12] .. Position angle of the orbital angular momentum vector in degrees.
- Warning
Member Function Documentation
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virtual |
Returns closure amplitude computed from the image given a datum_closure_phase object, containing all of the accoutrements. While this provides access to the actual data value, the two could be separated if necessary. Also takes an accuracy parameter with the same units as the data, indicating the accuracy with which the model must generate a comparison value. Note that this can be redefined in child classes.
Implements model_closure_amplitude.
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virtual |
Returns closure phase in degrees computed from the image given a datum_closure_phase object, containing all of the accoutrements. While this provides access to the actual data value, the two could be separated if necessary. Also takes an accuracy parameter with the same units as the data, indicating the accuracy with which the model must generate a comparison value. Note that this is redefined since the closure phase of Gaussian images is identically zero.
Implements model_closure_phase.
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virtual |
A one-time generate function that permits model construction prior to calling the visibility_amplitude, closure_phase, etc. for each datum. Takes a vector of parameters.
Implements model_closure_amplitude.
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inlinevirtual |
A user-supplied function that returns the number of the parameters the model expects
Implements model_closure_amplitude.
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virtual |
Returns visibility amplitudes in Jy computed from the image given a datum_visibility_amplitude object, containing all of the accoutrements. While this provides access to the actual data value, the two could be separated if necessary. Also takes an accuracy parameter with the same units as the data, indicating the accuracy with which the model must generate a comparison value. Note that this is redefined to accomodate the possibility of using the analytical computation.
Implements model_visibility_amplitude.
The documentation for this class was generated from the following files:
- model/model_circular_binary.h
- model/model_circular_binary.cpp