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* Definition of Lorene class Star_bhns
*
*/
/*
* Copyright (c) 2005-2007 Keisuke Taniguchi
*
* 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 __STAR_BHNS_H_
#define __STAR_BHNS_H_
/*
* $Id: star_bhns.h,v 1.3 2014/10/13 08:52:36 j_novak Exp $
* $Log: star_bhns.h,v $
* Revision 1.3 2014/10/13 08:52:36 j_novak
* Lorene classes and functions now belong to the namespace Lorene.
*
* Revision 1.2 2008/05/15 18:55:55 k_taniguchi
* Change of some parameters.
*
* Revision 1.1 2007/06/22 01:04:35 k_taniguchi
* *** empty log message ***
*
*
* $Header: /cvsroot/Lorene/C++/Include/star_bhns.h,v 1.3 2014/10/13 08:52:36 j_novak Exp $
*
*/
// Lorene headers
#include "star.h"
namespace Lorene {
// External classes which appear in the declaration of class Star_bhns:
class Hole_bhns ;
/**
* Class for stars in black hole-neutron star binaries.
* \ingroup(star)
*
*/
class Star_bhns : public Star {
// Data :
// -----
protected:
/** Affine mapping for solving poisson's equations of
* metric quantities
*/
Map_af mp_aff ;
/** \c true for an irrotational star, \c false for
* a corotating one
*/
bool irrotational ;
/** Scalar potential \f$\Psi_0\f$ of the non-translational part of
* fluid 4-velocity (in the irrotational case)
*/
Scalar psi0 ;
/** Gradient of \f$\Psi\f$ (in the irrotational case)
* (Spherical components with respect to the mapping of the star)
*/
Vector d_psi ;
/** Spatial projection of the fluid 3-velocity with respect to
* the co-orbiting observer.
* (Spherical components with respect to the mapping of the star)
*/
Vector wit_w ;
/** Logarithm of the Lorentz factor between the fluid and
* the co-orbiting observer.
*/
Scalar loggam ;
/** 3-vector shift, divided by \e N , of the rotating coordinates,
* \f$\beta^i/N\f$.
* (Spherical components with respect to the mapping of the star)
*/
Vector bsn ;
/// Lorentz factor between the fluid and the co-orbiting observer
Scalar gam ;
/** Lorentz factor between the co-orbiting observer
* and the Eulerian one
*/
Scalar gam0 ;
/// Centrifugal potential
Scalar pot_centri ;
/// Lapconf function generated by the star
Scalar lapconf_auto ;
/// Lapconf function generated by the companion black hole
Scalar lapconf_comp ;
/// Total lapconf function
Scalar lapconf_tot ;
/// Lapse function generated by the "star"
Scalar lapse_auto ; // = lapconf_auto / confo_tot
/// Total lapse function
Scalar lapse_tot ;
/** Derivative of the lapconf function generated by the star
* \f$ \partial_j \alpha \f$
*/
Vector d_lapconf_auto ;
/** Derivative of the lapconf function generated by the companion
* black hole
*/
Vector d_lapconf_comp ;
/// Shift vector generated by the star
Vector shift_auto ;
/// Shift vector generated by the companion black hole
Vector shift_comp ;
/// Total shift vector
Vector shift_tot ;
/** Derivative of the shift vector generated by the star
* \f$ \eta^{ik} \partial_k \beta^j \f$
*/
Tensor d_shift_auto ;
/** Derivative of the shift vector generated by the companion
* black hole
*/
Tensor d_shift_comp ;
/// Conformal factor generated by the star
Scalar confo_auto ;
/// Conformal factor generated by the companion black hole
Scalar confo_comp ;
/// Total conformal factor
Scalar confo_tot ;
/** Derivative of the conformal factor generated by the star
* \f$ \partial_j \psi \f$
*/
Vector d_confo_auto ;
/** Derivative of the conformal factor generated by the companion
* black hole
*/
Vector d_confo_comp ;
/// Fourth power of the total conformal factor
Scalar psi4 ; // psi4 = pow(confo_tot, 4.)
/** Part of the extrinsic curvature tensor \f$ A^{ij}\f$
* generated by \c shift_auto , \c lapse_auto , and
* \c confo_auto .
*/
Sym_tensor taij_auto ;
/** Part of the scalar \f$\eta_{ik} \eta_{jl} A^{ij} A^{kl}\f$
* generated by \f$A_{ij}^{\rm auto}\f$
*/
Scalar taij_quad_auto ;
/** Flat metric defined on the mapping (Spherical components
* with respect to the mapping of the star ).
*/
Metric_flat flat ;
/** Effective source at the previous step for the resolution of
* the Poisson equation for \c lapconf_auto .
*/
Scalar ssjm1_lapconf ;
/** Effective source at the previous step for the resolution of
* the Poisson equation for \c confo_auto .
*/
Scalar ssjm1_confo ;
/** Effective source at the previous step for the resolution of
* the Poisson equation for the scalar \f$\chi\f$ by means of
* \c Map_et::poisson .
* \f$\chi\f$ is an intermediate quantity for the resolution of the
* elliptic equation for the shift vector \f$N^i\f$
*/
Scalar ssjm1_khi ;
/** Effective source at the previous step for the resolution of
* the vector Poisson equation for \f$W^i\f$ by means of
* \c Map_et::poisson .
* \f$W^i\f$ is an intermediate quantity for the resolution of the
* elliptic equation for the shift vector \f$N^i\f$
* (Components with respect to the Cartesian triad associated with
* the mapping \c mp )
*/
Vector ssjm1_wshift ;
// Derived data
// ------------
protected:
mutable double* p_mass_b_bhns ; ///< Baryon mass
mutable double* p_mass_g_bhns ; ///< Gravitational mass
// Constructors - Destructor
// -------------------------
public:
/** Standard constructor
*
* @param mp_i Mapping on which the star will be defined
* @param nzet_i Number of domains occupied by the star
* @param eos_i Equation of state of the stellar matter
* @param irrot_i should be \c true for an irrotational star,
* \c false for a corotating one
*/
Star_bhns(Map& mp_i, int nzet_i, const Eos& eos_i, bool irrot_i) ;
Star_bhns(const Star_bhns& ) ; ///< Copy constructor
/** Constructor from a file (see \c sauve(FILE*) )
* @param mp_i Mapping on which the star will be defined
* @param eos_i Equation of state of the stellar matter
* @param fich input file (must have been created by the function
* \c sauve )
*/
Star_bhns(Map& mp_i, const Eos& eos_i, FILE* fich) ;
virtual ~Star_bhns() ; ///< Destructor
// Memory management
// -----------------
protected:
/// Deletes all the derived quantities
virtual void del_deriv() const ;
/// Sets to \c 0x0 all the pointers on derived quantities
void set_der_0x0() const ;
// Mutators / assignment
// ---------------------
public:
/// Assignment to another Star_bhns
void operator=(const Star_bhns&) ;
/// Read/write the centrifugal potential
Scalar& set_pot_centri() ;
/// Read/write of the lapconf function generated by the neutron star
Scalar& set_lapconf_auto() ;
/** Read/write of the lapconf function generated by the companion
* black hole
*/
Scalar& set_lapconf_comp() ;
/// Read/write of the shift vector generated by the neutron star
Vector& set_shift_auto() ;
/** Read/write of the shift vector generated by the companion
* black hole
*/
Vector& set_shift_comp() ;
/// Read/write of the conformal factor generated by the neutron star
Scalar& set_confo_auto() ;
/** Read/write of the conformal factor generated by the companion
* black hole
*/
Scalar& set_confo_comp() ;
// Accessors
// ---------
public:
/** Returns \c true for an irrotational motion, \c false for
* a corotating one.
*/
bool is_irrotational() const {return irrotational; } ;
/// Returns the non-translational part of the velocity potential
const Scalar& get_psi0() const {return psi0; } ;
/** Returns the covariant derivative of the velocity potential
* (Spherical components with respect to the mapping of the star)
*/
const Vector& get_d_psi() const {return d_psi; } ;
/** Returns the spatial projection of the fluid 3-velocity with
* respect to the co-orbiting observer.
* (Spherical components with respect to the mapping of the star)
*/
const Vector& get_wit_w() const {return wit_w; } ;
/** Returns the logarithm of the Lorentz factor between the fluid and
* the co-orbiting observer.
*/
const Scalar& get_loggam() const {return loggam; } ;
/** Returns the shift vector, divided by \e N , of the rotating
* coordinates, \f$\beta^i/N\f$.
* (Spherical components with respect to the mapping of the star)
*/
const Vector& get_bsn() const {return bsn; } ;
/// Returns the Lorentz factor gam
const Scalar& get_gam() const {return gam; } ;
/// Returns the Lorentz factor gam0
const Scalar& get_gam0() const {return gam0; } ;
/// Returns the centrifugal potential
const Scalar& get_pot_centri() const {return pot_centri; } ;
/// Returns the part of the lapconf function generated by the star
const Scalar& get_lapconf_auto() const {return lapconf_auto; } ;
/** Returns the part of the lapconf function generated by the
* companion black hole
*/
const Scalar& get_lapconf_comp() const {return lapconf_comp; } ;
/// Returns the total lapconf function
const Scalar& get_lapconf_tot() const {return lapconf_tot; } ;
// Returns the part of the lapse function generated by the star
const Scalar& get_lapse_auto() const {return lapse_auto; } ;
/// Returns the total lapse function
const Scalar& get_lapse_tot() const {return lapse_tot; } ;
/// Returns the derivative of the lapse function generated by the star
const Vector& get_d_lapconf_auto() const {return d_lapconf_auto; } ;
/** Returns the derivative of the lapse function generated by
* the companion black hole
*/
const Vector& get_d_lapconf_comp() const {return d_lapconf_comp; } ;
/// Returns the part of the shift vector generated by the star
const Vector& get_shift_auto() const {return shift_auto; } ;
/** Returns the part of the shift vector generated by the
* companion black hole
*/
const Vector& get_shift_comp() const {return shift_comp; } ;
/// Returns the part total shift vector
const Vector& get_shift_tot() const {return shift_tot; } ;
/// Returns the derivative of the shift vector generated by the star
const Tensor& get_d_shift_auto() const {return d_shift_auto; } ;
/** Returns the derivative of the shift vector generated by the
* companion black hole
*/
const Tensor& get_d_shift_comp() const {return d_shift_comp; } ;
/// Returns the part of the conformal factor generated by the star
const Scalar& get_confo_auto() const {return confo_auto; } ;
/** Returns the part of the conformal factor generated by the
* companion black hole
*/
const Scalar& get_confo_comp() const {return confo_comp; } ;
/// Returns the total conformal factor
const Scalar& get_confo_tot() const {return confo_tot; } ;
/** Returns the derivative of the conformal factor generated
* by the star
*/
const Vector& get_d_confo_auto() const {return d_confo_auto; } ;
/** Returns the derivative of the conformal factor generated
* by the companion black hole
*/
const Vector& get_d_confo_comp() const {return d_confo_comp; } ;
/// Returns the fourth power of the total conformal factor
const Scalar& get_psi4() const {return psi4; } ;
/** Returns the part of the extrinsic curvature tensor
* \f$\tilde A^{ij}\f$ generated by the neutron star part.
*/
const Sym_tensor& get_taij_auto() const {return taij_auto; } ;
/** Returns the part of the scalar
* \f$\eta_{ik} \eta_{jl} A^{ij} A^{kl}\f$
* generated by \f$A_{ij}^{\rm auto}\f$
*/
const Scalar& get_taij_quad_auto() const {return taij_quad_auto; } ;
// Outputs
// -------
public:
virtual void sauve(FILE *) const ; ///< Save in a file
protected:
/// Operator >> (virtual function called by the operator <<).
virtual ostream& operator>>(ostream& ) const ;
// Global quantities
// -----------------
public:
/// Baryon mass
virtual double mass_b() const ;
virtual double mass_b_bhns(bool kerrschild, const double& mass_bh,
const double& sepa) const ;
/// Gravitational mass
virtual double mass_g() const ;
virtual double mass_g_bhns() const ;
// Computational routines
// ----------------------
public:
/** Computes the hydrodynamical quantities relative to the Eulerian
* observer from those in the fluid frame, as well as
* \c wit_w and \c loggam .
*
* The calculation is performed starting from the quantities
* \c ent , \c ener , \c press , \c a_car and \c bsn ,
* which are supposed to be up to date.
* From these, the following fields are updated:
* \c gam_euler , \c u_euler , \c ener_euler ,
* \c s_euler , \c stress_euler ,
* \c wit_w and \c loggam .
*
* @param kerrschild should be \c true for a Kerr-Schild background,
* \c false for a Conformally flat one
* @param mass_bh BH mass in the background metric
* @param sepa Separation between NS and BH
*
*/
void hydro_euler_bhns(bool kerrschild, const double& mass_bh,
const double& sepa) ;
/** Computes metric coefficients from known potentials
* with relaxation when the companion is a black hole.
*
* The calculation is performed starting from the quantities
* \c lapse_auto , \c shift_auto , \c confo_auto ,
* \c comp.lapse_auto , \c comp.confo_auto
* which are supposed to be up to date.
* From these, the following fields are updated:
* \c lapse_comp , \c lapse_tot, \c confo_comp,
* \c confo_tot , \c psi4 ,
*
* @param hole companion black hole
* @param star_prev previous value of the star
* @param relax relaxation parameter
*
*/
void update_metric_bhns(const Hole_bhns& hole,
const Star_bhns& star_prev,
double relax) ;
/** Computes derivative of metric quantities from
* the companion black hole
*
* @param hole companion black hole
*
*/
void update_met_der_comp_bhns(const Hole_bhns& hole) ;
/** Computes the quantities \c bsn and \c pot_centri .
*
* The calculation is performed starting from the quantities
* \c lapse_tot , \c shift_tot ,
* which are supposed to be up to date.
*
* @param kerrschild should be \c true for a Kerr-Schild background,
* \c false for a Conformally flat one
* @param mass_bh BH mass in the background metric
* @param sepa Separation between NS and BH
* @param omega angular velocity with respect to an asymptotically
* inertial observer
* @param x_rot absolute X coordinate of the rotation axis
* @param y_rot absolute Y coordinate of the rotation axis
*
*/
void kinema_bhns(bool kerrschild, const double& mass_bh,
const double& sepa, double omega,
double x_rot, double y_rot) ;
/// Computes the gradient of the total velocity potential \f$\psi\f$.
void fait_d_psi_bhns() ;
/** Computes \c taij_auto , \c taij_quad_auto from
* \c shift_auto , \c lapse_auto , \c confo_auto .
*/
void extr_curv_bhns() ;
/** Computes an equilibrium configuration
*
* @param ent_c [input] Central enthalpy
* @param mass_bh [input] BH mass in the background metric
* @param sepa [input] Separation between NS and BH
* @param kerrschild should be \c true for a Kerr-Schild background,
* \c false for a Conformally flat one
* @param mer [input] Number of iteration
* @param mermax_ns [input] Maximum number of iteration steps
* @param mermax_potvit [input] Maximum number of steps in
* Map_radial::poisson_compact
* @param mermax_poisson [input] Maximum number of steps in
* poisson scalar
* @param filter_r [input] No. points to be deleted for (r): lap,conf
* @param filter_r_s [input] No. points to be deleted for (r): shift
* @param filter_p_s [input] No. points to be deleted for (phi): shift
* @param relax_poisson [input] Relaxation factor in poisson scalar
* @param relax_potvit [input] Relaxation factor in
* Map_radial::poisson_compact
* @param thres_adapt [input] Threshold on dH/dr for the adaptation
* of the mapping
* @param resize_ns [input] Resize factor for the first shell
* @param fact_resize [input] 1-D \c Tbl for the input of some
* factors : \\
* \c fact(0) : A resizing factor for the first shell
* @param diff [output] 1-D \c Tbl for the storage of some
* error indicators :
*/
void equilibrium_bhns(double ent_c, const double& mass_bh,
const double& sepa, bool kerrschild,
int mer, int mermax_ns, int mermax_potvit,
int mermax_poisson, int filter_r, int filter_r_s,
int filter_p_s, double relax_poisson,
double relax_potvit, double thres_adapt,
double resize_ns,
const Tbl& fact_resize, Tbl& diff) ;
/** Computes the non-translational part of the velocity scalar
* potential \f$\psi0\f$ by solving the continuity equation.
*
* @param mass_bh [input] BH mass in the background metric
* @param sepa [input] Separation between NS and BH
* @param kerrschild should be \c true for a Kerr-Schild background,
* \c false for a Conformally flat one
* @param mermax [input] Maximum number of steps in the iteration
* @param precis [input] Required precision: the iteration will
* be stopped when the relative difference
* on \f$\psi0\f$ between two successive steps
* is lower than \c precis .
* @param relax [input] Relaxation factor.
*
* @return Relative error of the resolution obtained by comparing
* the operator acting on the solution with the source.
*/
double velo_pot_bhns(const double& mass_bh, const double& sepa,
bool kerrschild,
int mermax, double precis, double relax) ;
/** Sensitive indicator of the mass-shedding to the direction of
* \f$r\f$, \f$\theta=\pi/2\f$, \f$\phi\f$.
*
* @param radius [input] Radial coordinate
* @param phi [input] Azimuthal angle
*/
double chi_rp(double radius, double phi) ;
/** Radius of the star to the direction of
* \f$\theta=\pi/2\f$ and \f$\phi\f$.
*
* @param phi [input] Azimuthal angle
*/
double radius_p(double phi) ;
/** Azimuthal angle when the indicator of the mass-shedding
* takes its minimum chi_min
*/
double phi_min() ;
/** Azimuthal angle when the indicator of the mass-shedding
* takes its local minimum
*
* @param phi_ini [input] Initial azumuthal angle to search minimum
*/
double phi_local_min(double phi_ini) ;
/** Performs a relaxation on \c ent , \c lapse_auto ,
* \c shift_auto , \c confo_auto .
*
* @param star_prev [input] star at the previous step
* @param relax_ent [input] Relaxation factor for \c ent
* @param relax_met [input] Relaxation factor for \c lapse_auto ,
* \c shift_auto , \c confo_auto ,
* only if \c (mer%fmer_met=0) .
* @param mer [input] Step number
* @param fmer_met [input] Step interval between metric updates
*/
void relax_bhns(const Star_bhns& star_prev, double relax_ent,
double relax_met, int mer, int fmer_met) ;
/** Computes a spherical configuration
*
* @param ent_c [input] Central enthalpy
* @param precis [input] precision
*/
void equil_spher_bhns(double ent_c, double precis) ;
friend class Bin_bhns ;
};
}
#endif
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