fisher_calculator_rd Module Reference

This module contains the code that computes the Fisher matrix for Redshift Drift. More...

Functions/Subroutines
subroutine, public	rd_theo_calc (P, FP, redrift, err)
	This subroutine returns the theoretical prediction of redshift drift given the input cosmological parameters and the observation interval given in specifications. More...
subroutine, public	rd_error_calc (P, FP, RDsigma, err)
subroutine, public	save_rd_mock_to_file (FP, mock_size, RD_theory, RD_error, filename)
	This subroutine outputs to file a SN covariance. More...
subroutine, public	rd_derivativecalc (P, FP, param_num, deltav_derivative, deltav_der_error, deltav_initial, initial_step, num_param, error_code)
	This subroutine computes the derivative of the observed redshift drift signal. The calculation is carried out with a fixed stepsize finite difference formula or by the Richardson’s deferred approach to the limit. More...
subroutine, public	fisher_rd (P, FP, num_param, Fisher_Matrix, outroot)
	This subroutine computes the Fisher matrix for redshift drift. More...

Detailed Description

This module contains the code that computes the Fisher matrix for Redshift Drift.

Author

Matteo Martinelli, Marco Raveri

Function/Subroutine Documentation

subroutine, public fisher_calculator_rd::fisher_rd	(	type(cambparams), intent(in)	P,
		type(cosmicfish_params), intent(in)	FP,
		integer, intent(in)	num_param,
		real(dl), dimension(num_param,num_param), intent(out)	Fisher_Matrix,
		character(len=*), intent(in), optional	outroot
	)

This subroutine computes the Fisher matrix for redshift drift.

Parameters

[in]	p	Input CAMBparams
[in]	fp	Input Cosmicfish params
[in]	num_param	Input dimension of the Fisher matrix
[out]	fisher_matrix	Output Fisher matrix
[in]	outroot	Optional input: filename that will be used to dump to file optional output if feedback is greater than 1.

Definition at line 457 of file 011_Fisher_calculator_RD.f90.

subroutine, public fisher_calculator_rd::rd_derivativecalc	(	type(cambparams), intent(in)	P,
		type(cosmicfish_params), intent(in)	FP,
		integer, intent(in)	param_num,
		real(dl), dimension(:), intent(out)	deltav_derivative,
		real(dl), dimension(:), intent(out)	deltav_der_error,
		real(dl), dimension(:), intent(in)	deltav_initial,
		real(dl), intent(in)	initial_step,
		integer, intent(in)	num_param,
		integer, intent(out)	error_code
	)

This subroutine computes the derivative of the observed redshift drift signal. The calculation is carried out with a fixed stepsize finite difference formula or by the Richardson’s deferred approach to the limit.

Parameters

[in]	p	Input CAMBparams
[in]	fp	Input Cosmicfish params
[in]	param_num	Input number of the parameter wrt the derivative is computed
[in]	num_param	Input number of parameters involved in the calculation
[in]	deltav_initial	deltav computed for h=0
[out]	deltav_derivative	Output returns the derivative of the deltav vector
[out]	deltav_der_error	Output returns the error on the deltav derivative
[in]	initial_step	Input initial value of h. Does not need to be small for the adaptive algorithm.
[out]	error_code	Output error code. When run the code will not stop on error but report it 0 = everything was fine computation exited correctly 1 = error on input parameters 2 = error on computation 3 = error on quality of the results

Definition at line 192 of file 011_Fisher_calculator_RD.f90.

subroutine, public fisher_calculator_rd::rd_error_calc	(	type(cambparams), intent(in)	P,
		type(cosmicfish_params), intent(in)	FP,
		real(dl), dimension(fp%fisher_rd%number_rd_redshifts), intent(out)	RDsigma,
		integer, intent(out)	err
	)

Parameters

[in]	p	Input CAMBparams
[in]	fp	Input Cosmicfish params
[out]	rdsigma	Output array with the RD errors
[out]	err	Output error code: 0 = all fine 1 = error in input 2 = error in computation 3 = error in quality 4 = routine specific

Definition at line 105 of file 011_Fisher_calculator_RD.f90.

subroutine, public fisher_calculator_rd::rd_theo_calc	(	type(cambparams), intent(in)	P,
		type(cosmicfish_params), intent(in)	FP,
		real(dl), dimension(fp%fisher_rd%number_rd_redshifts), intent(out)	redrift,
		integer, intent(out)	err
	)

This subroutine returns the theoretical prediction of redshift drift given the input cosmological parameters and the observation interval given in specifications.

Parameters

[in]	p	Input CAMBparams
[in]	fp	Input Cosmicfish params
[out]	redrift	Output array with the theoretical RD
[out]	err	Output error code: 0 = all fine 1 = error in input 2 = error in computation 3 = error in quality 4 = routine specific

Definition at line 55 of file 011_Fisher_calculator_RD.f90.

subroutine, public fisher_calculator_rd::save_rd_mock_to_file	(	type(cosmicfish_params), intent(in)	FP,
		integer, intent(in)	mock_size,
		real(dl), dimension(mock_size), intent(in)	RD_theory,
		real(dl), dimension(mock_size), intent(in)	RD_error,
		character(len=*), intent(in)	filename
	)

This subroutine outputs to file a SN covariance.

Parameters

[in]	fp	Input Cosmicfish params
[in]	mock_size	number of mock points
[in]	rd_theory	fiducial cosmology redshift drift
[in]	rd_error	error on delta v
[in]	filename	Name of the file where the RD mock will be saved

Definition at line 164 of file 011_Fisher_calculator_RD.f90.