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* Definition of Lorene class Isol_Hor
*
*/
/*
* Copyright (c) 2004-2005 Jose Luis Jaramillo
* Francois Limousin
*
* This file is part of LORENE.
*
* LORENE is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* LORENE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with LORENE; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __Isol_hor_H_
#define __Isol_hor_H_
/*
* $Id: isol_hor.h,v 1.54 2014/10/13 08:52:35 j_novak Exp $
* $Log: isol_hor.h,v $
* Revision 1.54 2014/10/13 08:52:35 j_novak
* Lorene classes and functions now belong to the namespace Lorene.
*
* Revision 1.53 2007/08/22 16:10:37 f_limousin
* Correction of many errors in binhor_hh.C
*
* Revision 1.52 2007/04/13 15:29:44 f_limousin
* Lots of improvements, generalisation to an arbitrary state of
* rotation, implementation of the spatial metric given by Samaya.
*
* Revision 1.51 2006/08/01 14:36:25 f_limousin
* New argument for the functions vv_bound_cart_bin( )
*
* Revision 1.50 2006/06/29 08:58:57 f_limousin
* Boundary conditions in argument of write_global()
*
* Revision 1.49 2006/06/28 13:36:26 f_limousin
* Convergence to a given irreductible mass
*
* Revision 1.48 2006/05/24 16:53:51 f_limousin
* Funtion import(Bin_hor&)
*
* Revision 1.47 2006/02/22 16:55:42 f_limousin
* boundary_nn_Neu_kk(int nn = 1)
*
* Revision 1.46 2006/02/22 16:20:54 jl_jaramillo
* 2nc correction Valeur boundary_nn_Neu_kk(int nn)
*
* Revision 1.45 2006/02/20 16:48:14 jl_jaramillo
* corrections numerical viscosity
*
* Revision 1.44 2006/02/20 15:01:37 jl_jaramillo
* function for computing generalised Conformal THin Sandwich eqautions
*
* Revision 1.43 2006/01/18 12:29:18 jl_jaramillo
* new method (chi,theta) for the spherically symmetric case
*
* Revision 1.42 2006/01/16 17:15:34 jl_jaramillo
* function for solving the spherical case
*
* Revision 1.41 2005/11/02 16:10:38 jl_jaramillo
* change in boundary_nn_Dir_lapl
*
* Revision 1.40 2005/10/24 16:45:16 jl_jaramillo
* Cook boundary condition
*
* Revision 1.39 2005/10/23 12:32:00 f_limousin
* Pure Dirichlet boundary condition for Psi.
*
* Revision 1.38 2005/09/13 18:33:17 f_limousin
* New function vv_bound_cart_bin(double) for computing binaries with
* berlin condition for the shift vector.
* Suppress all the symy and asymy in the importations.
*
* Revision 1.37 2005/07/11 08:19:54 f_limousin
* New function axi_break() to compute the departure to axisymmetry.
*
* Revision 1.36 2005/06/09 07:56:24 f_limousin
* Implement a new function sol_elliptic_boundary() and
* Vector::poisson_boundary(...) which solve the vectorial poisson
* equation (method 6) with an inner boundary condition.
*
* Revision 1.35 2005/05/12 14:48:55 f_limousin
* New boundary condition for the lapse : boundary_nn_lapl().
*
* Revision 1.34 2005/04/29 14:05:03 f_limousin
* Important changes : manage the dependances between quantities (for
* instance psi and psi4). New function write_global(ost).
*
* Revision 1.33 2005/04/15 11:20:39 jl_jaramillo
* Function adapt_hor(double c_min, double c_max) for adapting a given surface
* to the excised surface
*
* Revision 1.32 2005/04/08 12:15:38 f_limousin
* Function set_psi(). And dependance in phi.
*
* Revision 1.31 2005/04/03 19:48:38 f_limousin
* Implementation of set_psi(psi_in).
*
* Revision 1.30 2005/04/02 15:50:08 f_limousin
* New data member nz (number of zones). Delete ww.
*
* Revision 1.29 2005/03/31 09:48:04 f_limousin
* New functions compute_ww(..) and aa_kerr_ww() and new data ww.
*
* Revision 1.28 2005/03/28 19:45:41 f_limousin
* Implement Isol_hor::aa_kerr_perturb(...) and new member aa_quad_evol.
*
* Revision 1.27 2005/03/24 16:50:40 f_limousin
* Add parameters solve_shift and solve_psi in par_isol.d and in function
* init_dat(...). Implement Isolhor::kerr_perturb().
*
* Revision 1.26 2005/03/10 16:57:01 f_limousin
* Improve the convergence of the code coal_bh.
*
* Revision 1.25 2005/03/10 10:19:42 f_limousin
* Add the regularisation of the shift in the case of a single black hole
* and lapse zero on the horizon.
*
* Revision 1.24 2005/03/09 10:28:37 f_limousin
* Delete functions init_data_b_neumann(...) and init_data_berlin(...)
* --> New parameter solve_lapse in the function init_data(...).
* New function update_aa().
*
* Revision 1.23 2005/03/06 16:59:33 f_limousin
* New function Isol_hor::aa() (the one belonging to the class
* Time_slice_conf need to compute the time derivative of hh and thus
* cannot work in the class Isol_hor).
*
* Revision 1.22 2005/03/04 09:39:31 f_limousin
* Implement the constructor from a file, operator>>, operator<<
* and function sauve in the class Bin_hor.
*
* Revision 1.21 2005/03/03 10:25:16 f_limousin
* In the class Isol_hor :
* - Add the boost in x and z-direction (members boost_x and boost_z,
* and functions get_boost_x(), set_boost_x(double))
* - Add function area_hor()
* - Put the boundary conditions for the lapse, psi and beta in
* the parameter file.
* In the class bin_hor :
* - Introduce function to compute global quantities as ADM mass,
* Komar mass and angular momentum.
*
* Revision 1.20 2005/02/24 17:22:53 f_limousin
* Suppression of the function beta_bound_cart().
* The boundary conditions for psi, N and beta are now some parameters
* in par_init.D and par_coal.d.
*
* Revision 1.19 2005/02/07 10:30:09 f_limousin
* Add the regularisation in the case N=0 on the horizon.
*
* Revision 1.18 2004/12/31 15:33:37 f_limousin
* Change the constructor from a file and the standard constructor.
*
* Revision 1.17 2004/12/29 16:30:00 f_limousin
* Improve comments for doxygen
*
* Revision 1.16 2004/12/29 16:10:25 f_limousin
* Add the new class Bin_hor.
*
* Revision 1.14 2004/11/24 19:32:05 jl_jaramillo
* Method for initial data with Berlin boundary conditions
*
* Revision 1.13 2004/11/18 10:53:03 jl_jaramillo
* Declarations for Berlin boundary conditions
*
* Revision 1.12 2004/11/05 11:01:13 f_limousin
* Delete arguments ener_dens, mom_dens and trace_stress in all functions
* source_nn, source_psi, source_beta, init_data. Delete also
* argument partial_save in function save.
*
* Revision 1.11 2004/11/05 10:11:23 f_limousin
* The member Metric met_gamt replace Sym_tensor gamt.
*
* Revision 1.10 2004/11/03 17:15:46 f_limousin
* Change the standart constructor. Add 4 memebers : trK, trK_point,
* gamt and gamt_point.
* Add also a constructor from a file.
*
* Revision 1.9 2004/11/02 17:42:33 f_limousin
* New method sauve(...) to save in a binary file.
*
* Revision 1.8 2004/11/02 16:15:12 f_limousin
* Add new argument ang_vel in function init_dat(...).
*
* Revision 1.7 2004/10/29 15:46:14 jl_jaramillo
* Remove 2 members, add ADM angular momentum and change name
* of functions.
*
* Revision 1.6 2004/10/01 16:51:16 f_limousin
* Pure Dirichlet boundary condition added
*
* Revision 1.5 2004/09/28 16:03:58 f_limousin
* Add parameter niter in the parameter file par_hor.d. It appears in
* argument of the function init_data_schwarz(...).
*
* Revision 1.4 2004/09/17 13:35:25 f_limousin
* Introduction of relaxation in init_data_schwarz
*
* Revision 1.3 2004/09/16 08:36:57 f_limousin
* New boundary conditions for lapse and psi.
*
* Revision 1.2 2004/09/09 17:04:27 jl_jaramillo
* Elimination of _ih
*
*
*
* $Header: /cvsroot/Lorene/C++/Include/isol_hor.h,v 1.54 2014/10/13 08:52:35 j_novak Exp $
*
*/
#include "time_slice.h"
#include "proto.h"
#include "headcpp.h"
#include "cmp.h"
#include "evolution.h"
namespace Lorene {
class Sym_tensor_trans ;
class Sym_tensor ;
class Vector ;
class Scalar ;
class Metric ;
class Metric_flat ;
class Base_vect ;
class Map ;
class Tbl ;
class Time_slice ;
class Time_slice_conf ;
//----------------------------//
// class Isol_Hor //
//----------------------------//
/**
* Spacelike time-slice of an Isolated Horizon in a 3+1 spacetime with conformal decomposition.
* No gauge choice imposed.
* \ingroup (evol)
*
*/
class Isol_hor : public Time_slice_conf {
// Data :
// -----
protected:
/// Affine mapping.
Map_af& mp ;
/// Number of zones.
int nz ;
/// Radius of the horizon in LORENE's units.
double radius ;
/// Angular velocity in LORENE's units.
double omega ;
/// Boost velocity in x-direction
double boost_x ;
/// Boost velocity in z-direction
double boost_z ;
/// Intensity of the correction on the shift vector.
double regul ;
/// Values at successive time steps of the lapse function \f$ N_{auto} \f$.
mutable Evolution_std<Scalar> n_auto_evol ;
/// Values at successive time steps of the lapse function \f$ N_{comp} \f$.
mutable Evolution_std<Scalar> n_comp_evol ;
/// Values at successive time steps of the conformal factor \f$ \Psi_{auto} \f$.
mutable Evolution_std<Scalar> psi_auto_evol ;
/// Values at successive time steps of the lapse function \f$ \Psi_{comp} \f$.
mutable Evolution_std<Scalar> psi_comp_evol ;
/// Values at successive time steps of the covariant derivative
/// of the lapse with respect to the flat metric \f$ \overline\nabla_i N \f$.
mutable Evolution_std<Vector> dn_evol ;
/// Values at successive time steps of the covariant derivative
/// of the conformal factor \f$ \overline\nabla_i \Psi \f$.
mutable Evolution_std<Vector> dpsi_evol ;
/// Values at successive time steps of the shift function \f$ \beta^i_{auto} \f$.
mutable Evolution_std<Vector> beta_auto_evol ;
/// Values at successive time steps of the shift function \f$ \beta^i_{comp} \f$.
mutable Evolution_std<Vector> beta_comp_evol ;
/** Values at successive time steps of the components \f$ A^{ij}_{auto} \f$
* of the conformal representation of the traceless part
* of the extrinsic curvature:
*/
mutable Evolution_std<Sym_tensor> aa_auto_evol ;
/** Values at successive time steps of the components \f$ A^{ij}_{comp} \f$
* of the conformal representation of the traceless part
* of the extrinsic curvature:
*/
mutable Evolution_std<Sym_tensor> aa_comp_evol ;
/** Values at successive time steps of the components \f$ A^{ij}*2N \f$
*/
mutable Evolution_std<Sym_tensor> aa_nn ;
/// Values at successive time steps of the components \f$ A^{ij}A_{ij} \f$
mutable Evolution_std<Scalar> aa_quad_evol ;
/// 3 metric tilde
Metric met_gamt ;
/// Time derivative of the 3-metric tilde
Sym_tensor gamt_point ;
/// Trace of the extrinsic curvature
Scalar trK ;
/// Time derivative of the trace of the extrinsic curvature
Scalar trK_point ;
/**
* Function used to construct \f$ A^{ij}_{auto} \f$
* from the total \f$A^{ij}\f$. Only used for a binary system.
*
* Mainly this \c Scalar is 1 around the hole and 0 around the companion
* and the sum of \c decouple for the hole and his companion is 1
* everywhere.
*/
Scalar decouple ;
// Constructors - Destructor
// -------------------------
public:
/** Standard constructor
* @param mpi affine mapping
* @param depth_in number of stored time slices; this parameter is used
* to set the \c scheme_order member with \c scheme_order
* = \c depth_in - 1. \c scheme_order can be changed
* afterwards by the method \c set_scheme_order(int).
*/
Isol_hor(Map_af& mpi, int depth_in = 3) ;
/** Constructor from conformal decomposition
*
* @param mpi affine mapping
* @param lapse_in lapse function \e N
* @param psi_in conformal factor \f$\Psi\f$ relating the
* physical metric \f$ \gamma_{ij} \f$ to the conformal one:
* \f$ \gamma_{ij} = \Psi^4 \tilde\gamma_{ij} \f$
* @param shift_in shift vector
* @param aa_in conformal representation \f$ A^{ij} \f$
* of the traceless part of the extrinsic curvature:
* \f$ A^{ij} = \Psi^4 \left( K^{ij} - \frac{1}{3} K \gamma^{ij} \right) \f$
* @param gamt 3-metric tilde
* @param gamt_point time derivative of the 3-metric tilde
* @param trK trace \e K of the extrinsic curvature
* @param trK_point time derivative of the trace \e K of the extrinsic curvature
* @param ff_in reference flat metric with respect to which the
* conformal decomposition is performed
* @param depth_in number of stored time slices; this parameter is used
* to set the \c scheme_order member with \c scheme_order
* = \c depth_in - 1. \c scheme_order can be changed
* afterwards by the method \c set_scheme_order(int).
*/
Isol_hor(Map_af& mpi, const Scalar& lapse_in, const Scalar& psi_in,
const Vector& shift_in, const Sym_tensor& aa_in,
const Metric& gamt, const Sym_tensor& gamt_point,
const Scalar& trK, const Scalar& trK_point,
const Metric_flat& ff_in, int depth_in = 3) ;
/// Copy constructor
Isol_hor(const Isol_hor& ) ;
/** Constructor from a binary file
* @param mpi affine mapping
* @param fich file containing the saved \c isol_hor
* @param partial_read indicates whether the full object must be read in
* file or whether the final construction is devoted
* to a constructor of a derived class
* @param depth_in number of stored time slices; this parameter is used
* to set the \c scheme_order member with \c scheme_order
* = \c depth_in - 1. \c scheme_order can be changed
* afterwards by the method \c set_scheme_order(int).
*/
Isol_hor (Map_af& mp, FILE* fich,
bool partial_read, int depth_in = 3) ;
/// Destructor
virtual ~Isol_hor() ;
// Mutators / assignment
// ---------------------
public:
/// Assignment to another Isol_hor
void operator=(const Isol_hor&) ;
public:
/// Returns the mapping (readonly).
const Map_af& get_mp() const {return mp;} ;
/// Read/write of the mapping
Map_af& set_mp() {return mp; } ;
/**
* Returns the radius of the horizon.
*/
double get_radius() const {return radius;} ;
/**
* Sets the radius of the horizon to \c rad .
*/
void set_radius(double rad) {radius = rad ;} ;
/**
* Returns the angular velocity.
*/
double get_omega() const {return omega ;} ;
/**
* Sets the angular velocity to \c ome .
*/
void set_omega(double ome) {omega = ome ;} ;
/**
* Returns the boost velocity in x-direction.
*/
double get_boost_x() const {return boost_x ;} ;
/**
* Sets the boost velocity in x-direction to \c bo .
*/
void set_boost_x(double bo) {boost_x = bo ;} ;
/**
* Returns the boost velocity in z-direction.
*/
double get_boost_z() const {return boost_z ;} ;
/**
* Sets the boost velocity in z-direction to \c bo .
*/
void set_boost_z(double bo) {boost_z = bo ;} ;
// Accessors
// ---------
public:
/// Lapse function \f$ N_{auto} \f$ at the current time step \c jtime
virtual const Scalar& n_auto() const ;
/// Lapse function \f$ N_{comp} \f$ at the current time step \c jtime
virtual const Scalar& n_comp() const ;
/// Conformal factor \f$ \Psi_{auto} \f$ at the current time step \c jtime
virtual const Scalar& psi_auto() const ;
/// Conformal factor \f$ \Psi_{comp} \f$ at the current time step \c jtime
virtual const Scalar& psi_comp() const ;
/// Covariant derivative of the lapse function \f$ \overline\nabla_i N \f$ at the
/// current time step \c jtime
virtual const Vector& dnn() const ;
/// Covariant derivative with respect to the flat metric
/// of the conformal factor \f$ \overline\nabla_i \Psi \f$ at the
/// current time step \c jtime
virtual const Vector& dpsi() const ;
/// Shift function \f$ \beta^i_{auto} \f$ at the current time step \c jtime
virtual const Vector& beta_auto() const ;
/// Shift function \f$ \beta^i_{comp} \f$ at the current time step \c jtime
virtual const Vector& beta_comp() const ;
/** Conformal representation \f$ A^{ij}_{auto} \f$ of the traceless part
* of the extrinsic curvature:
* Returns the value at the current time step \c jtime.
*/
virtual const Sym_tensor& aa_auto() const ;
/** Conformal representation \f$ A^{ij}_{comp} \f$ of the traceless part
* of the extrinsic curvature:
* Returns the value at the current time step \c jtime.
*/
virtual const Sym_tensor& aa_comp() const ;
/** Conformal representation \f$ A^{ij}A_{ij} \f$.
* Returns the value at the current time step \c jtime.
*/
virtual const Scalar& aa_quad() const ;
/** Conformal metric
* \f$ \tilde\gamma_{ij} = \Psi^{-4} \gamma_{ij} \f$
* Returns the value at the current time step (\c jtime ).
*/
virtual const Metric& tgam() const {return met_gamt ;}
/**
* Returns the function used to construct \c tkij_auto from \c tkij_tot .
*/
const Scalar get_decouple() const {return decouple ;}
public:
/**
* Imports the part of \e N due to the companion hole \c comp . The
* total \e N is then calculated.
*
* It also imports the covariant derivative of \e N and construct
* the total \f$\nabla_i N\f$.
*/
void n_comp (const Isol_hor& comp) ;
/**
* Imports the part of \f$\Psi\f$ due to the companion hole \c comp . The
* total \f$\Psi\f$ is then calculated.
*
* It also imports the covariant derivative of \f$\Psi\f$ and construct
* the total \f$\nabla_i \Psi\f$.
*/
void psi_comp (const Isol_hor& comp) ;
/**
* Imports the part of \f$\beta^i\f$ due to the companion hole \c comp. The
* total \f$\beta^i\f$ is then calculated.
*
*/
void beta_comp (const Isol_hor& comp) ;
/**
* Computes the viriel error, that is the difference between the ADM
* and the Komar
* masses, calculated by the asymptotic behaviours of
* respectively \f$\Psi\f$ and \e N .
*
* \b WARNING this should only be used for an isolated black hole.
*/
double viriel_seul () const ;
/**
* Sets the values of the fields to :
* \li \c n_auto \f$= \frac{1}{2}-2\frac{a}{r}\f$
* \li \c n_comp \f$= \frac{1}{2}\f$
* \li \c psi_auto \f$= \frac{1}{2}+\frac{a}{r}\f$
* \li \c psi_comp \f$= \frac{1}{2}\f$
*
* \e a being the radius of the hole, the other fields being set to zero.
*/
void init_bhole () ;
/**
* Sets the 3-metric tilde to the flat metric and gamt_point,
* trK and trK_point to zero.
*/
void init_met_trK() ;
/**
* Initiates for a single black hole.
*
* \b WARNING It supposes that the boost is zero and should only be
* used for an isolated black hole..
*/
void init_bhole_seul () ;
/** Sets the conformal factor \f$ \Psi \f$ relating the
* physical metric \f$ \gamma_{ij} \f$ to the conformal one:
* \f$ \gamma_{ij} = \Psi^4 \tilde\gamma_{ij} \f$.
* \f$ \Psi \f$ is defined by
* \f[ \Psi := \left( \frac{\det\gamma_{ij}}{\det f_{ij}}
* \right) ^{1/12} \f]
* Sets the value at the current time step (\c jtime ) and
* delete all quantities which depend on \f$ \Psi \f$.
*/
void set_psi(const Scalar& psi_in) ;
/// Sets the lapse
void set_nn(const Scalar& nn_in) ;
/// Sets the conformal metric to gam_tilde.
void set_gamt(const Metric& gam_tilde) ;
// Physical parameters
//--------------------
public:
/// Vector radial normal
const Vector radial_vect_hor() const ;
/// Vector radial normal tilde
const Vector tradial_vect_hor() const ;
/// Radial component of the shift with respect to the conformal metric
const Scalar b_tilde() const ;
/// Element of area of the horizon
const Scalar darea_hor() const ;
/// Area of the horizon
double area_hor() const ;
/// Radius of the horizon
double radius_hor() const ;
/// Angular momentum (modulo)
double ang_mom_hor() const ;
/// Mass computed at the horizon
double mass_hor() const ;
/// Surface gravity
double kappa_hor() const ;
/// Orbital velocity
double omega_hor() const ;
/// ADM angular Momentum
double ang_mom_adm() const ;
/// Expansion of the outgoing null normal (\f$ \bf n + \bf s \f$)
Scalar expansion() const ;
//Computational methods
//---------------------
public:
/* function to compute initial data for a single black hole
* @param bound_nn boundary condition for the lapse
* @param lim_nn value of the boundary condition for the lapse
* @param bound_psi boundary condition for \f$ \Psi \f$
* @param bound_beta boundary condition for the shift
* @param solve_lapse do we solve the equation for the lapse ?
* @param precis precision for the convergence
* @param relax relaxation
* @param niter number of iterations
*/
void init_data(int bound_nn, double lim_nn, int bound_psi, int bound_beta,
int solve_lapse, int solve_psi, int solve_shift,
double precis = 1.e-12,
double relax_nn = 0.5, double relax_psi = 0.5,
double relax_beta = 0.5, int niter = 100) ;
void init_data_loop(int bound_nn, double lim_nn, int bound_psi,
int bound_beta, int solve_lapse, int solve_psi,
int solve_shift, double precis= 1.e-12,
double precis_loop= 1.e-12,
double relax_nn = 1., double relax_psi= 1.,
double relax_beta = 1., double relax_loop = 1.,
int niter = 100) ;
void init_data_spher(int bound_nn, double lim_nn, int bound_psi,
int bound_beta, int solve_lapse, int solve_psi,
int solve_shift, double precis = 1.e-12,
double relax = 1., int niter = 100) ;
void init_data_alt(int bound_nn, double lim_nn, int bound_psi,
int bound_beta, int solve_lapse, int solve_psi,
int solve_shift, double precis = 1.e-12,
double relax = 1., int niter = 100) ;
void init_data_CTS_gen(int bound_nn, double lim_nn, int bound_psi, int bound_beta,
int solve_lapse, int solve_psi, int solve_shift,
double precis = 1.e-12, double relax_nn = 1.,
double relax_psi = 1., double relax_beta = 1.,
int niter = 100, double a = 1., double zeta = 4.) ;
//Sources
//-------
/// Source for \f$ \Psi \f$
const Scalar source_psi() const ;
/// Source for \c N
const Scalar source_nn() const ;
/// Source for \f$ \beta \f$
const Vector source_beta() const ;
/// Source for \c b_tilde
const Scalar source_b_tilde() const ;
/// Source for \c vector_b
const Vector source_vector_b() const ;
// BOUNDARY CONDITIONS
//--------------------
/// Dirichlet boundary condition for \f$ \Psi \f$ (evolution)
const Valeur boundary_psi_Dir_evol() const ;
/// Neumann boundary condition for \f$ \Psi \f$ (evolution)
const Valeur boundary_psi_Neu_evol() const ;
/// Dirichlet boundary condition for \f$ \Psi \f$ (spatial)
const Valeur boundary_psi_Dir_spat() const ;
/// Neumann boundary condition for \f$ \Psi \f$ (spatial)
const Valeur boundary_psi_Neu_spat() const ;
/// Neumann boundary condition for \f$ \Psi \f$ (spatial)
const Valeur boundary_psi_app_hor() const ;
/// Dirichlet boundary condition for \f$ \Psi \f$ (spatial)
const Valeur boundary_psi_Dir() const ;
/// Dirichlet boundary condition for \c N using the extrinsic curvature
const Valeur boundary_nn_Dir_kk() const ;
/// Neumann boundary condition for \c N using the extrinsic curvature
const Valeur boundary_nn_Neu_kk(int nn = 1) const ;
/// Neumann boundary condition for \c N using Cook's boundary condition
const Valeur boundary_nn_Neu_Cook() const ;
/// Dirichlet boundary condition for \c N (effectif)
/// \f$ \partial_r N + a N = 0 \f$
const Valeur boundary_nn_Dir_eff(double aa) const ;
/// Dirichlet boundary condition for \c N fixing the divergence
/// of the connection form \f$ \omega \f$
const Valeur boundary_nn_Dir_lapl(int mer = 1) const ;
/// Neumann boundary condition on nn (effectif)
/// \f$ \partial_r N + a N = 0 \f$
const Valeur boundary_nn_Neu_eff(double aa) const ;
/// Dirichlet boundary condition \f$ N = a \f$
const Valeur boundary_nn_Dir(double aa) const ;
/// Component r of boundary value of \f$ \beta \f$
const Valeur boundary_beta_r() const ;
/// Component theta of boundary value of \f$ \beta \f$
const Valeur boundary_beta_theta() const ;
/// Component phi of boundary value of \f$ \beta \f$
const Valeur boundary_beta_phi(double om) const ;
/// Component x of boundary value of \f$ \beta \f$
const Valeur boundary_beta_x(double om) const ;
/// Component y of boundary value of \f$ \beta \f$
const Valeur boundary_beta_y(double om) const ;
/// Component z of boundary value of \f$ \beta \f$
const Valeur boundary_beta_z() const ;
/// Boundary value for a boost in x-direction
const Valeur beta_boost_x() const ;
/// Boundary value for a boost in z-direction
const Valeur beta_boost_z() const ;
/// Vector \f$ V^i \f$ for boundary conditions in cartesian
const Vector vv_bound_cart(double om) const ;
/// Vector \f$ V^i \f$ for boundary conditions in cartesian for
/// binary systems.
const Vector vv_bound_cart_bin(double om, int hole = 0) const ;
/// Component x of boundary value of \f$ V^i \f$
const Valeur boundary_vv_x(double om) const ;
/// Component y of boundary value of \f$ V^i \f$
const Valeur boundary_vv_y(double om) const ;
/// Component z of boundary value of \f$ V^i \f$
const Valeur boundary_vv_z(double om) const ;
/// Component x of boundary value of \f$ V^i \f$
const Valeur boundary_vv_x_bin(double om, int hole = 0) const ;
/// Component y of boundary value of \f$ V^i \f$
const Valeur boundary_vv_y_bin(double om, int hole = 0) const ;
/// Component z of boundary value of \f$ V^i \f$
const Valeur boundary_vv_z_bin(double om, int hole = 0) const ;
/// Neumann boundary condition for \c b_tilde
const Valeur boundary_b_tilde_Neu() const ;
/// Dirichlet boundary condition for \c b_tilde
const Valeur boundary_b_tilde_Dir() const ;
/** Conformal representation \f$ A^{ij} \f$ of the traceless part
* of the extrinsic curvature:
* \f$ A^{ij} = \Psi^4 \left( K^{ij} - \frac{1}{3} K \gamma^{ij} \right) \f$.
*/
void update_aa() ;
/**
* Corrects \c shift_auto in such a way that the total \f$A^{ij}\f$ is
* equal to zero in the horizon, which should ensure the regularity
* of \f$K^{ij}\f$.
*
* \b WARNING : this should only be used for a black hole in
* a binary system \c Bin_hor.
*
* @param comp [input]: the part of \f$\beta^i\f$ generated by the companion
* hole.
*/
double regularisation (const Vector& shift_auto, const Vector& shift_comp,
double ang_vel) ;
/**
* Corrects the shift in the innermost shell, so that it remains \f$
* {\mathcal{C}}^2\f$ and that \f$A^{ij}\f$ equals zero on the horizon.
*
* return the relative difference between the shift before
* and after the regularisation.
*
* \b WARNING this should only be used for an isolated black hole.
*/
double regularise_one() ;
/// Initialisation of the metric tilde from equation (15) of
/// Dain (2002). The determinant of this conformal metric is not one.
void met_kerr_perturb() ;
/* Perturbation of Kerr using \f$ A^{ij}A_{ij} \f$ from
* equation (14) of Dain (2002).
* @param mm mass of the Kerr black hole metric.
* @param aa rotation parameter of the Kerr black hole metric.
*/
void aa_kerr_ww(double mm, double aa) ;
/// Breaking of the axial symmetry on the horizon
double axi_break() const ;
/* Calculation of the outermost trapped surface and adaptation
* of all necessary quantities
*/
void adapt_hor(double c_min, double c_max) ;
// Outputs
// -------
protected:
/// Operator >> (virtual function called by the operator<<).
virtual ostream& operator>>(ostream& ) const ;
public :
/** Total or partial saves in a binary file.
*
* @param fich binary file
* @param partial_save indicates whether the whole object must be
* saved.
*/
virtual void sauve(FILE* fich, bool partial_save) const ;
friend class Bin_hor ; /// Binary systems
};
/**
* Binary black holes system. \ingroup (star)
*
* This class is intended for dealing with binary black holes configurations
* in the conformaly flat approximation.
*/
class Single_hor {
// Data :
// -----
protected:
/// Affine mapping.
Map_af& mp ;
/// Number of zones.
int nz ;
/// Radius of the horizon in LORENE's units.
double radius ;
/// Angular velocity in LORENE's units.
double omega ;
/// Intensity of the correction on the shift vector.
double regul ;
/// Lapse function \f$ N_{auto} \f$.
Scalar n_auto ;
/// Lapse function \f$ N_{comp} \f$.
Scalar n_comp ;
/// Lapse function \f$ N \f$.
Scalar nn ;
/// Conformal factor \f$ \Psi_{auto} \f$.
Scalar psi_auto ;
/// Conformal factor \f$ \Psi_{comp} \f$.
Scalar psi_comp ;
/// Conformal factor \f$ \Psi \f$.
Scalar psi ;
/// Conformal factor \f$ \Psi^4 \f$.
mutable Scalar* p_psi4 ;
/// Covariant derivative
/// of the lapse with respect to the flat metric \f$ \overline\nabla_i N \f$.
Vector dn ;
/// Covariant derivative
/// of the conformal factor \f$ \overline\nabla_i \Psi \f$.
Vector dpsi ;
/// Shift function \f$ \beta^i_{auto} \f$.
Vector beta_auto ;
/// Shift function \f$ \beta^i_{comp} \f$.
Vector beta_comp ;
/// Shift function \f$ \beta^i \f$.
Vector beta ;
/// Spatial metric \f$ \gamma \f$.
mutable Metric* p_gam ;
/** Components \f$ A^{ij}_{auto} \f$
* of the conformal representation of the traceless part
* of the extrinsic curvature:
*/
Sym_tensor aa_auto ;
/** Components \f$ A^{ij}_{comp} \f$
* of the conformal representation of the traceless part
* of the extrinsic curvature:
*/
Sym_tensor aa_comp ;
/** Components \f$ A^{ij} \f$
* of the conformal representation of the traceless part
* of the extrinsic curvature:
*/
Sym_tensor aa ;
/// Components \f$ K^{ij} \f$ of the extrinsic curvature:
mutable Sym_tensor* p_k_dd ;
/// 3 metric tilde
Metric tgam ;
/// 3 metric flat
Metric_flat ff ;
/// Deviation metric
Sym_tensor hh ;
/// Time derivative of the 3-metric tilde
Sym_tensor gamt_point ;
/// Trace of the extrinsic curvature
Scalar trK ;
/// Time derivative of the trace of the extrinsic curvature
Scalar trK_point ;
/**
* Function used to construct \f$ A^{ij}_{auto} \f$
* from the total \f$A^{ij}\f$. Only used for a binary system.
*
* Mainly this \c Scalar is 1 around the hole and 0 around the companion
* and the sum of \c decouple for the hole and his companion is 1
* everywhere.
*/
Scalar decouple ;
// Constructors - Destructor
// -------------------------
public:
/** Standard constructor
* @param mpi affine mapping
*/
Single_hor(Map_af& mpi) ;
/// Copy constructor
Single_hor(const Single_hor& ) ;
/** Constructor from a binary file
* @param mpi affine mapping
* @param fich file containing the saved \c isol_hor
* @param partial_read indicates whether the full object must be read in
* file or whether the final construction is devoted
* to a constructor of a derived class
*/
Single_hor (Map_af& mp, FILE* fich) ;
/// Destructor
virtual ~Single_hor() ;
// Mutators / assignment
// ---------------------
public:
/// Assignment to another Single_hor
void operator=(const Single_hor&) ;
public:
/// Returns the mapping (readonly).
const Map_af& get_mp() const {return mp;} ;
/// Read/write of the mapping
Map_af& set_mp() {return mp; } ;
/**
* Returns the radius of the horizon.
*/
double get_radius() const {return radius;} ;
/**
* Sets the radius of the horizon to \c rad .
*/
void set_radius(double rad) {radius = rad ;} ;
/**
* Returns the angular velocity.
*/
double get_omega() const {return omega ;} ;
/**
* Sets the angular velocity to \c ome .
*/
void set_omega(double ome) {omega = ome ;} ;
// Memory management
// -----------------
protected:
/// Deletes all the derived quantities
void del_deriv() const ;
/// Sets to \c 0x0 all the pointers on derived quantities
void set_der_0x0() const ;
// Accessors
// ---------
public:
/// Lapse function \f$ N_{auto} \f$
const Scalar& get_n_auto() const ;
/// Lapse function \f$ N_{comp} \f$
const Scalar& get_n_comp() const ;
/// Lapse function \f$ N\f$
const Scalar& get_nn() const ;
/// Conformal factor \f$ \Psi_{auto} \f$
const Scalar& get_psi_auto() const ;
/// Conformal factor \f$ \Psi_{comp} \f$
const Scalar& get_psi_comp() const ;
/// Conformal factor \f$ \Psi \f$
const Scalar& get_psi() const ;
/// Conformal factor \f$ \Psi^4 \f$
const Scalar& get_psi4() const ;
/// Covariant derivative of the lapse function \f$ \overline\nabla_i N \f$
const Vector& get_dn() const ;
/// Covariant derivative with respect to the flat metric
/// of the conformal factor \f$ \overline\nabla_i \Psi \f$
const Vector& get_dpsi() const ;
/// Shift function \f$ \beta^i_{auto} \f$
const Vector& get_beta_auto() const ;
/// Shift function \f$ \beta^i_{comp} \f$
const Vector& get_beta_comp() const ;
/// Shift function \f$ \beta^i \f$
const Vector& get_beta() const ;
/** Conformal representation \f$ A^{ij}_{auto} \f$ of the traceless part
* of the extrinsic curvature:
*/
const Sym_tensor& get_aa_auto() const ;
/** Conformal representation \f$ A^{ij}_{comp} \f$ of the traceless part
* of the extrinsic curvature:
*/
const Sym_tensor& get_aa_comp() const ;
/** Conformal representation \f$ A^{ij} \f$ of the traceless part
* of the extrinsic curvature:
*/
const Sym_tensor& get_aa() const ;
/** Conformal metric
* \f$ \tilde\gamma_{ij} = \Psi^{-4} \gamma_{ij} \f$
*/
const Metric& get_tgam() const {return tgam ;}
/** metric \f$ \gamma_{ij} \f$
*/
const Metric& get_gam() const ;
/** k_dd
*/
const Sym_tensor& get_k_dd() const ;
/**
* Returns the function used to construct \c tkij_auto from \c tkij_tot .
*/
const Scalar get_decouple() const {return decouple ;}
public:
/**
* Imports the part of \e N due to the companion hole \c comp . The
* total \e N is then calculated.
*
* It also imports the covariant derivative of \e N and construct
* the total \f$\nabla_i N\f$.
*/
void n_comp_import (const Single_hor& comp) ;
/**
* Imports the part of \f$\Psi\f$ due to the companion hole \c comp . The
* total \f$\Psi\f$ is then calculated.
*
* It also imports the covariant derivative of \f$\Psi\f$ and construct
* the total \f$\nabla_i \Psi\f$.
*/
void psi_comp_import (const Single_hor& comp) ;
/**
* Imports the part of \f$\beta^i\f$ due to the companion hole \c comp. The
* total \f$\beta^i\f$ is then calculated.
*
*/
void beta_comp_import (const Single_hor& comp) ;
/**
* Computes the viriel error, that is the difference between the ADM
* and the Komar
* masses, calculated by the asymptotic behaviours of
* respectively \f$\Psi\f$ and \e N .
*
* \b WARNING this should only be used for an isolated black hole.
*/
double viriel_seul () const ;
/**
* Sets the values of the fields to :
* \li \c n_auto \f$= \frac{1}{2}-2\frac{a}{r}\f$
* \li \c n_comp \f$= \frac{1}{2}\f$
* \li \c psi_auto \f$= \frac{1}{2}+\frac{a}{r}\f$
* \li \c psi_comp \f$= \frac{1}{2}\f$
*
* \e a being the radius of the hole, the other fields being set to zero.
*/
void init_bhole () ;
/**
* Sets the 3-metric tilde to the flat metric and gamt_point,
* trK and trK_point to zero.
*/
void init_met_trK() ;
/**
* Initiates for a single black hole.
*
* \b WARNING It supposes that the boost is zero and should only be
* used for an isolated black hole..
*/
void init_bhole_seul () ;
/** Sets the conformal factor \f$ \Psi \f$ relating the
* physical metric \f$ \gamma_{ij} \f$ to the conformal one:
* \f$ \gamma_{ij} = \Psi^4 \tilde\gamma_{ij} \f$.
* \f$ \Psi \f$ is defined by
* \f[ \Psi := \left( \frac{\det\gamma_{ij}}{\det f_{ij}}
* \right) ^{1/12} \f]
* Sets the value at the current time step (\c jtime ) and
* delete all quantities which depend on \f$ \Psi \f$.
*/
void set_psi_auto(const Scalar& psi_in) ;
/// Sets the lapse
void set_n_auto(const Scalar& nn_in) ;
/// Sets the shift
void set_beta_auto(const Scalar& shift_in) ;
/// Sets aa_auto
void set_aa_auto(const Scalar& aa_auto_in) ;
/// Sets aa_comp
void set_aa_comp(const Scalar& aa_comp_in) ;
/// Sets aa
void set_aa(const Scalar& aa_in) ;
// Physical parameters
//--------------------
public:
/// Radial component of the shift with respect to the conformal metric
const Scalar b_tilde() const ;
/// Element of area of the horizon
const Scalar darea_hor() const ;
/// Area of the horizon
double area_hor() const ;
/// Radius of the horizon
double radius_hor() const ;
/// Angular momentum (modulo)
double ang_mom_hor() const ;
/// Mass computed at the horizon
double mass_hor() const ;
/// Surface gravity
double kappa_hor() const ;
/// Orbital velocity
double omega_hor() const ;
/// ADM angular Momentum
double ang_mom_adm() const ;
/// Expansion of the outgoing null normal (\f$ \bf n + \bf s \f$)
Scalar expansion() const ;
// BOUNDARY CONDITIONS
//--------------------
/// Neumann boundary condition for \f$ \Psi \f
const Valeur boundary_psi_app_hor() const ;
/// Dirichlet boundary condition for \c N
/// \f$ \partial_r N + a N = 0 \f$
const Valeur boundary_nn_Dir(double aa) const ;
/// Neumann boundary condition on nn
/// \f$ \partial_r N + a N = 0 \f$
const Valeur boundary_nn_Neu(double aa) const ;
/// Component x of boundary value of \f$ \beta \f$
const Valeur boundary_beta_x(double om_orb, double om_loc) const ;
/// Component y of boundary value of \f$ \beta \f$
const Valeur boundary_beta_y(double om_orb, double om_loc) const ;
/// Component z of boundary value of \f$ \beta \f$
const Valeur boundary_beta_z() const ;
/**
* Corrects \c shift_auto in such a way that the total \f$A^{ij}\f$ is
* equal to zero in the horizon, which should ensure the regularity
* of \f$K^{ij}\f$.
*
* \b WARNING : this should only be used for a black hole in
* a binary system \c Bin_hor.
*
* @param comp [input]: the part of \f$\beta^i\f$ generated by the companion
* hole.
*/
double regularisation (const Vector& shift_auto, const Vector& shift_comp,
double ang_vel) ;
/**
* Corrects the shift in the innermost shell, so that it remains \f$
* {\mathcal{C}}^2\f$ and that \f$A^{ij}\f$ equals zero on the horizon.
*
* return the relative difference between the shift before
* and after the regularisation.
*
* \b WARNING this should only be used for an isolated black hole.
*/
double regularise_one() ;
public :
/** Total or partial saves in a binary file.
*
* @param fich binary file
* @param partial_save indicates whether the whole object must be
* saved.
*/
virtual void sauve(FILE* fich) const ;
friend class Bin_hor ; /// Binary systems
};
class Bin_hor {
// data :
private:
// lThe two black holes
Single_hor hole1 ; ///< Black hole one
Single_hor hole2 ; ///< Black hole two
///Array on the black holes
Single_hor* holes[2] ;
double omega ; ///< Angular velocity
public:
/** Standard constructor
* @param mp1 affine mapping for the first black hole
* @param mp2 affine mapping for the second black hole
* @param depth_in number of stored time slices; this parameter is
* used to set the \c scheme_order member with \c scheme_order
* = \c depth_in - 1. \c scheme_order can be changed
* afterwards by the method \c set_scheme_order(int).
*/
Bin_hor(Map_af& mp1, Map_af& mp2) ;
Bin_hor(const Bin_hor& ) ; ///< Copy constructor
/** Constructor from a binary file
* @param mp1 affine mapping of the first black hole
* @param mp2 affine mapping of the second black hole
* @param fich file containing the saved \c Bin_hor
* @param partial_read indicates whether the full object must be
* read in file or whether the final construction is devoted
* to a constructor of a derived class
* @param depth_in number of stored time slices; this parameter
* is used to set the \c scheme_order member with \c scheme_order
* = \c depth_in - 1. \c scheme_order can be changed
* afterwards by the method \c set_scheme_order(int).
*/
Bin_hor (Map_af& mp1, Map_af& mp2, FILE* fich) ;
virtual ~Bin_hor() ; ///< Destructor
public :
/** Total or partial saves in a binary file.
*
* @param fich binary file
* @param partial_save indicates whether the whole object must be
* saved.
*/
void sauve(FILE* fich) const ;
/** Write global quantities in a formatted file.
* This file can be read by an external program.
*/
void write_global(ostream&, double lim_nn, int bound_nn,
int bound_psi, int bound_beta, double alpha) const ;
public:
void operator=(const Bin_hor&) ; ///< Affectation operator
/**
* Read/write of a component of the system. \c i must be equal to
* 1 or 2.
*/
Single_hor& set(int i)
{ assert( (i==1) || (i==2) );
return *holes[i-1] ;} ;
/**
* Sets the orbital velocity to \c ome
*/
void set_omega(double ome) {omega = ome ;
hole1.set_omega (ome) ;
hole2.set_omega (ome) ;} ;
public:
/**
* Read only of a component of the system. \c i must be equal to
* 1 or 2.
*/ const Single_hor& operator()(int i) const
{ assert( (i==1) || (i==2) );
return *holes[i-1] ;} ;
/// Returns the angular velocity
double get_omega() const {return omega; } ;
/**
* Initialisation of the system. Each hole is set close to a
* Schwarzschild one
* and the parts of the fields generated by
* the companion are calculated.
*
* The angular velocity is set to zero.
*/
void init_bin_hor() ;
/**
* Computes the viriel error, that is the difference between
* the ADM and the Komar
* masses, calculated by the asymptotic behaviours of
* respectively \f$\Psi\f$ and \e N .
*/
double viriel() const ;
/**
* Calculation of the extrinsic curvature tensor.
* \c aa_auto_evol and \c aa_auto_comp are also computed.
*/
void extrinsic_curvature () ;
/**
* Calculates \c decouple which is used to obtain
* \c tkij_auto and \c tkij_comp
*/
void decouple () ;
public:
/**
* Initialize the systeme to Misner Lindquist solution,
* that is solving for \e N and
* \f$\Psi\f$ in the case \f$\Omega = 0\f$.
* @param precis [input] : precision for the convergence (on \e N ).
* @param relax [input] : relaxation parameter.
* @param bound_nn [input] : type of the boundary condition for
* the lapse.
* @param lim_nn [input] : value (double) of the coefficient for
* the boundary condition. Only used for boundary_nn_Dir(double),
* boundary_nn_Neu_eff(double) and boundary_nn_Dir_eff(double).
* @param bound_psi [input] : type of the boundary condition for
* psi.
*/
void set_statiques (double precis, double relax, int bound_nn,
double lim_nn, int bound_psi) ;
/**
* Solves the equation for a particular angular velocity,
* the systeme being
* initialized to Misner-Lindquist solution.
* @param angu [input] : angular velocity used for
* the boundary condition on
* \f$\vec{\beta}\f$.
* @param relax [input] : relaxation parameter.
* @param nb_om [input] : number of intermediates
* velocities to go from 0 to
* \c omega , typically 10.
* @param nb_it [input] : number of iteration when omega is fixed
* @param bound_nn [input] : type of the boundary condition for
* the lapse.
* @param lim_nn [input] : value (double) of the coefficient for
* the boundary condition. Only used for boundary_nn_Dir(double),
* boundary_nn_Neu_eff(double) and boundary_nn_Dir_eff(double).
* @param bound_psi [input] : type of the boundary condition for
* psi.
* @param bound_nn [input] : type of the boundary condition for
* the shift.
* @param step current step of the iteration
* @param sortie [input] : flag for the output on files
* (0 no output files).
* @returns : the virial error.
*/
double coal (double ang_vel, double relax, int nb_om,
int nb_it, int bound_nn, double lim_nn,
int bound_psi, int bound_beta, double omega_eff,
double alpha,
ostream& fich_iteration, ostream& fich_correction,
ostream& fich_viriel, ostream& fich_kss,
int step, int search_mass, double mass_irr,
const int sortie = 0) ;
/**
* Solves the equation for the lapse :
* The fields are the total values except those with
* subscript \f$_a\f$, which are
* the fields generated by each holes (\e a = 1, 2).
* @param precis [input] : precision, for the boudary conditions are
* obtained by iteration.
* @param relax [input] : relaxation parameter.
* @param bound_nn [input] : type of the boundary condition at the
* horizon.
* @param lim_nn [input] : value (double) of the coefficient for
* the boundary condition. Only used for boundary_nn_Dir(double),
* boundary_nn_Neu_eff(double) and boundary_nn_Dir_eff(double).
*/
void solve_lapse (double precis, double relax, int bound_nn,
double lim_nn) ;
/**
* Solves the equation for the conformal factor :
* The fields are the total values excpet those with
* subscript \f$_a\f$, which are
* the fields generated by each holes (\e a = 1, 2).
* @param precis [input] : precision, for the boudary
* conditions are being
* obtained by iteration.
* @param relax [input] : relaxation parameter.
* @param bound_psi [input] : type of the boundary condition at the
* horizon.
*/
void solve_psi (double precis, double relax, int bound_psi) ;
/**
* Solves the equation for the shift, using the
* Oohara-Nakarmure scheme :
* The fields are the total values excpet those with
* subscript \f$_a\f$, which are
* the fields generated by each holes (\c a = 1, 2).
* @param precis [input] : precision for the solver, the boundary
* conditions and the inversion of the operator being
* obtained by iteration.
* @param relax [input] : relaxation parameter.
* @param bound_beta [input] : type of the boundary condition at the
* horizon.
*/
void solve_shift (double precis, double relax, int bound_beta,
double omega_eff) ;
/**
* Function to initialize a Bin_hor from a solution
* computed with a smaller number of colocation points
*/
void import_bh (const Bin_hor& bin) ;
/**
* Calculates the ADM mass of the system.
*/
double adm_mass() const ;
/**
* Calculates the Komar mass of the system using :
* \f$M = \frac{1}{4 \pi} \oint_{\infty} D^i N {\mathrm d} S_i\f$.
*/
double komar_mass() const ;
/**
* Calculates the angular momentum of the black hole using
* the formula at the horizon.
*/
double ang_mom_hor() const ;
/**
* Calculates the angular momentum of the black hole.
*/
double ang_mom_adm() const ;
/**
* Calculation of the proper distance between the
* two spheres of inversion,
* along the x axis.
* @param nr [input] : number of points used for the calculation.
*/
double proper_distance(const int nr = 65) const ;
/**
* Calculation of the hole1 part of the Post-Newtonian
* correction to \f$h^{ij}\f$
*/
Sym_tensor hh_Samaya_hole1() ;
/**
* Calculation of the hole2 part of the Post-Newtonian
* correction to \f$h^{ij}\f$
*/
Sym_tensor hh_Samaya_hole2() ;
/**
* Calculation of the Post-Newtonian correction to \f$h^{ij}\f$
*/
void set_hh_Samaya() ;
} ;
}
#endif
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