lenstronomy.PointSource.Types package¶
Submodules¶
lenstronomy.PointSource.Types.base_ps module¶
- class lenstronomy.PointSource.Types.base_ps.PSBase(lens_model=None, fixed_magnification=False, additional_image=False)[source]¶
Bases:
object
base point source type class
- image_amplitude(kwargs_ps, *args, **kwargs)[source]¶
amplitudes as observed on the sky
- Parameters
kwargs_ps – keyword argument of point source model
kwargs – keyword arguments of function call
- Returns
numpy array of amplitudes
- image_position(kwargs_ps, **kwargs)[source]¶
on-sky position
- Parameters
kwargs_ps – keyword argument of point source model
- Returns
numpy array of x, y image positions
- source_amplitude(kwargs_ps, **kwargs)[source]¶
intrinsic source amplitudes (without lensing magnification, but still apparent)
- Parameters
kwargs_ps – keyword argument of point source model
kwargs – keyword arguments of function call (which are not used for this object
- Returns
numpy array of amplitudes
lenstronomy.PointSource.Types.lensed_position module¶
- class lenstronomy.PointSource.Types.lensed_position.LensedPositions(lens_model=None, fixed_magnification=False, additional_image=False)[source]¶
Bases:
lenstronomy.PointSource.Types.base_ps.PSBase
class of a a lensed point source parameterized as the (multiple) observed image positions Name within the PointSource module: ‘LENSED_POSITION’ parameters: ra_image, dec_image, point_amp If fixed_magnification=True, than ‘source_amp’ is a parameter instead of ‘point_amp’
- image_amplitude(kwargs_ps, kwargs_lens=None, x_pos=None, y_pos=None, magnification_limit=None, kwargs_lens_eqn_solver=None)[source]¶
image brightness amplitudes
- Parameters
kwargs_ps – keyword arguments of the point source model
kwargs_lens – keyword argument list of the lens model(s), only used when requiring the lens equation solver
x_pos – pre-computed image position (no lens equation solver applied)
y_pos – pre-computed image position (no lens equation solver applied)
magnification_limit – float >0 or None, if float is set and additional images are computed, only those images will be computed that exceed the lensing magnification (absolute value) limit
kwargs_lens_eqn_solver – keyword arguments specifying the numerical settings for the lens equation solver see LensEquationSolver() class for details
- Returns
array of image amplitudes
- image_position(kwargs_ps, kwargs_lens=None, magnification_limit=None, kwargs_lens_eqn_solver=None)[source]¶
on-sky image positions
- Parameters
kwargs_ps – keyword arguments of the point source model
kwargs_lens – keyword argument list of the lens model(s), only used when requiring the lens equation solver
magnification_limit – float >0 or None, if float is set and additional images are computed, only those images will be computed that exceed the lensing magnification (absolute value) limit
kwargs_lens_eqn_solver – keyword arguments specifying the numerical settings for the lens equation solver see LensEquationSolver() class for details
- Returns
image positions in x, y as arrays
- source_amplitude(kwargs_ps, kwargs_lens=None)[source]¶
intrinsic brightness amplitude of point source When brightnesses are defined in magnified on-sky positions, the intrinsic brightness is computed as the mean in the magnification corrected image position brightnesses.
- Parameters
kwargs_ps – keyword arguments of the point source model
kwargs_lens – keyword argument list of the lens model(s), used when brightness are defined in magnified on-sky positions
- Returns
brightness amplitude (as numpy array)
lenstronomy.PointSource.Types.source_position module¶
- class lenstronomy.PointSource.Types.source_position.SourcePositions(lens_model=None, fixed_magnification=False, additional_image=False)[source]¶
Bases:
lenstronomy.PointSource.Types.base_ps.PSBase
class of a single point source defined in the original source coordinate position that is lensed. The lens equation is solved to compute the image positions for the specified source position.
Name within the PointSource module: ‘SOURCE_POSITION’ parameters: ra_source, dec_source, source_amp, mag_pert (optional) If fixed_magnification=True, than ‘source_amp’ is a parameter instead of ‘point_amp’ mag_pert is a list of fractional magnification pertubations applied to point source images
- image_amplitude(kwargs_ps, kwargs_lens=None, x_pos=None, y_pos=None, magnification_limit=None, kwargs_lens_eqn_solver=None)[source]¶
image brightness amplitudes
- Parameters
kwargs_ps – keyword arguments of the point source model
kwargs_lens – keyword argument list of the lens model(s), only ignored when providing image positions directly
x_pos – pre-computed image position (no lens equation solver applied)
y_pos – pre-computed image position (no lens equation solver applied)
magnification_limit – float >0 or None, if float is set and additional images are computed, only those images will be computed that exceed the lensing magnification (absolute value) limit
kwargs_lens_eqn_solver – keyword arguments specifying the numerical settings for the lens equation solver see LensEquationSolver() class for details
- Returns
array of image amplitudes
- image_position(kwargs_ps, kwargs_lens=None, magnification_limit=None, kwargs_lens_eqn_solver=None)[source]¶
on-sky image positions
- Parameters
kwargs_ps – keyword arguments of the point source model
kwargs_lens – keyword argument list of the lens model(s), only used when requiring the lens equation solver
magnification_limit – float >0 or None, if float is set and additional images are computed, only those images will be computed that exceed the lensing magnification (absolute value) limit
kwargs_lens_eqn_solver – keyword arguments specifying the numerical settings for the lens equation solver see LensEquationSolver() class for details
- Returns
image positions in x, y as arrays
- source_amplitude(kwargs_ps, kwargs_lens=None)[source]¶
intrinsic brightness amplitude of point source When brightnesses are defined in magnified on-sky positions, the intrinsic brightness is computed as the mean in the magnification corrected image position brightnesses.
- Parameters
kwargs_ps – keyword arguments of the point source model
kwargs_lens – keyword argument list of the lens model(s), used when brightness are defined in magnified on-sky positions
- Returns
brightness amplitude (as numpy array)
lenstronomy.PointSource.Types.unlensed module¶
- class lenstronomy.PointSource.Types.unlensed.Unlensed(lens_model=None, fixed_magnification=False, additional_image=False)[source]¶
Bases:
lenstronomy.PointSource.Types.base_ps.PSBase
class of a single point source in the image plane, aka star Name within the PointSource module: ‘UNLENSED’ This model can deal with arrays of point sources. parameters: ra_image, dec_image, point_amp
- image_amplitude(kwargs_ps, **kwargs)[source]¶
amplitudes as observed on the sky
- Parameters
kwargs_ps – keyword argument of point source model
kwargs – keyword arguments of function call (which are not used for this object
- Returns
numpy array of amplitudes
- image_position(kwargs_ps, **kwargs)[source]¶
on-sky position
- Parameters
kwargs_ps – keyword argument of point source model
- Returns
numpy array of x, y image positions