/usr/include/lorene/C++/Include/spheroid.h is in liblorene-dev 0.0.0~cvs20161116+dfsg-1ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 | /*
* Definition of Lorene class Spheroid
*
*/
/*
* Copyright (c) 2006 Nicolas Vasset, Jerome Novak & Jose-Luis Jaramillo
*
* 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 __SPHEROID_H_
#define __SPHEROID_H_
/*
* $Id: spheroid.h,v 1.13 2014/10/13 08:52:36 j_novak Exp $
* $Log: spheroid.h,v $
* Revision 1.13 2014/10/13 08:52:36 j_novak
* Lorene classes and functions now belong to the namespace Lorene.
*
* Revision 1.12 2008/12/10 13:53:56 jl_jaramillo
* versions developed at Meudon in Novemver 2008
*
* Revision 1.11 2008/11/12 15:18:32 n_vasset
* New definition for the computation of Ricci scalar (instead of Ricci
* tensor previously)
*
* Revision 1.10 2008/07/09 08:48:23 n_vasset
* protected member zeta added.
*
* Revision 1.9 2008/06/04 12:31:56 n_vasset
* new functions multipole_mass and multipole_angu.
*
* Revision 1.8 2008/06/03 14:32:23 n_vasset
* dzpuis corrections (provisory). New function mass implemented.
*
* Revision 1.7 2006/09/07 08:39:43 j_novak
* Minor changes.
*
* Revision 1.6 2006/07/03 10:12:51 n_vasset
* adding of flag isphere
*
* Revision 1.5 2006/06/13 08:07:55 n_vasset
* Addition of 2 members
*
* Revision 1.4 2006/06/08 09:50:49 n_vasset
* corrected version for coordinates transformation
*
* Revision 1.3 2006/06/07 14:32:24 n_vasset
* modified constructor for 3d projector (Sym_tensor to Tensor)
*
* Revision 1.2 2006/05/26 13:25:42 j_novak
* Removed a 'const'
*
* Revision 1.1 2006/05/26 13:20:42 j_novak
* New class spheroid.
*
*
*
* $Header: /cvsroot/Lorene/C++/Include/spheroid.h,v 1.13 2014/10/13 08:52:36 j_novak Exp $
*
*/
#include "metric.h"
namespace Lorene {
/**
* Spheroidal 2-surfaces embedded in a time-slice of the 3+1 formalism.\ingroup (star)
*
*/
class Spheroid {
// Data :
// -----
protected:
///The location of the 2-surface as \e r = \c h_surf\f$(\theta, \varphi)\f$
Scalar h_surf ;
/** The jacobian of the adaptation of coordinates
(contravariant/covariant representation)*/
Tensor jac2d ;
/** The 3-d projector on the 2-surface (contravariant-covariant form).
**/
Tensor proj ;
/** The 3-d covariant degenerated 2-metric on the surface*/
Sym_tensor qq ;
/** The adapted normal vector field to spheroid in the 3-slice */
Vector ss ;
/** The conformal Killing vector field on the 2-surface
(set to by default to the axial vector associated with coordinate \f$ \varphi \f$) */
Vector ephi;
Metric qab ; /// Induced metric on the 2-surface \f$ q_{ab} \f$
Scalar ricci; /// The ricci scalar on the 2-surface
/** Extrinsic curvature of the 2-surface in the 3-slice.
* \f$ H_{ab} \f$ (covariant representation)
*/
Sym_tensor hh ;
Scalar trk ; ///< Trace \e K of the extrinsic curvature of the 3-slice
/** Normal-tangent component of the extrinsic curvature of the 3-slice.
* \f$ L_a \f$ (covariant representation)
*/
Vector ll ;
/** Tangent components of the extrinsic curvature of the 3-slice.
* \f$ J_{ab} \f$ (covariant representation)
*/
Sym_tensor jj ;
/** Normalization function for the outgoing null vector \b l.
*/
Scalar fff;
/** Normalization function for the ingoing null vector \b k.
*/
Scalar ggg;
/*** */
Scalar zeta;
/** Flag to know whether the horizon is geometrically round or distorted*/
bool issphere ;
// Derived data :
// ------------
protected:
mutable Scalar* p_sqrt_q ; ///< Surface element \f$\sqrt{\det q_{ab}} \f$
mutable double* p_area ; ///< The area of the 2-surface
mutable double* p_angu_mom ; ///< The angular momentum
mutable double* p_mass ; ///< Mass defined from angular momentum
mutable double* p_multipole_mass ;///< Mass multipole for the spheroid.
mutable double* p_multipole_angu ;///< Angular momentum multipole for the spheroid.
mutable double* p_epsilon_A_minus_one ; /// Refined Penrose parameter, difference wrt one.
mutable double* p_epsilon_P_minus_one ; /// Classical Penrose parameter, difference wrt one.
mutable Scalar* p_theta_plus ; ///< Null outgoing expansion
mutable Scalar* p_theta_minus ; ///< Null ingoing expansion
mutable Sym_tensor* p_shear ; ///< The shear tensor
mutable Tensor* p_delta ; /// The delta tensorial fields linked to Christoffel symbols
// Constructors - Destructor
// -------------------------
public:
/** Standard constructor.
* The input mapping must be defined on a mono-domain angular grid
* (see \c Mg3d::get_angu_mono_domain() for details).
*/
Spheroid(const Map_af& map, double radius) ;
/** Constructor of a spheroid embedded in a 3-slice (\c Time_slice ) of 3+1
* formalism.
* This is done from the \c Time_slice data.
* @param h_in : the location of the surface \e r = h_in (WARNING:must be
defined on a mono-domain angular grid)
* @param gamij : the 3-metric on the 3-slice
* @param Kij : the extrinsic curvature of the 3-slice
* (covariant representation)
*/
Spheroid(const Scalar& h_in, const Metric& gamij, const Sym_tensor& Kij) ;
Spheroid(const Spheroid& ) ; ///< Copy constructor
/// Constructor from a file (see \c sauve(FILE*) )
Spheroid(FILE* ) ;
virtual ~Spheroid() ; ///< 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 Spheroid
void operator=(const Spheroid&) ;
/// Assigns the conformal Killing vector field to phi.
void set_ephi(const Scalar&) ;
// Accessors
// ---------
public:
/// Returns the field \c h_surf
const Scalar& get_hsurf() const {return h_surf ; } ;
/// Returns the metric \f$ q_{ab} \f$
const Metric& get_qab() const {return qab ; } ;
/// Returns the 2-ricci scalar \f$ R = q^{ab}R_{ab} \f$
const Scalar& get_ricci() const {return ricci ; } ;
/// Returns the symmetric tensor \f$ H_{ab} \f$
const Sym_tensor& get_hh() const {return hh ; } ;
/// returns the 3-d degenerate 2-metric \f$ Q_{ab}\f$
const Sym_tensor& get_qq() const {return qq ; } ;
/// returns the 3-d projector on 2-surface \f$ Pi \f$
const Tensor& get_proj() const {return proj ; } ;
/// returns the 2-d jacobian of coordinate transformation \f$ J \f$
const Tensor& get_jac2d() const {return jac2d ; } ;
/// Returns the trace \c K on the 2-surface
const Scalar& get_trk() const {return trk; } ;
/// Returns the vector \f$ L_a \f$
const Vector& get_ll() const {return ll;} ;
/// Returns the vector \f$ S_a \f$
const Vector& get_ss() const {return ss;} ;
/// Returns the conformal Killing symmetry vector on the 2-surface
const Vector& get_ephi() const {return ephi;};
///Returns the symmetric tensor \f$ J_{ab} \f$
const Sym_tensor& get_jj() const {return jj;} ;
///Returns the normalization scalar \c F
const Scalar& get_fff() const {return fff;} ;
///Returns the normalization scalar \c G
const Scalar& get_ggg() const {return ggg;} ;
/// Returns the flag saying whether or not the horizon is geometrically round
bool get_issphere() const{return issphere;};
/// Sets the field \c h_surf
Scalar& set_hsurf() {del_deriv() ; return h_surf ; } ;
/// Sets the modified metric (non degenerated) \f$ q_{ab} \f$
Metric& set_qab() {del_deriv() ; return qab ; } ;
/// Sets the 2-Ricci scalar \f$ R = q^{ab}R_{ab} \f$
Scalar& set_ricci() {del_deriv() ; return ricci ; } ;
/// Sets the degenerated metric \f$ Q_{ab} \f$
Sym_tensor& set_qq() {del_deriv() ; return qq ; } ;
/// Sets the projector \f$ Pi \f$
Tensor& set_proj() {del_deriv() ; return proj ; } ;
/// Sets the symmetric tensor \f$ H_{ab} \f$
Sym_tensor& set_hh() {del_deriv() ; return hh ; } ;
/// Sets the trace \c K on the 2-surface
Scalar& set_trk() {del_deriv() ; return trk; } ;
/// Sets the vector \f$ L_a \f$
Vector& set_ll() {del_deriv() ; return ll;} ;
/// Sets the vector \f$ s_a \f$
Vector& set_ss() {del_deriv() ; return ss;} ;
///Sets the symmetric tensor \f$ J_{ab} \f$
Sym_tensor& set_jj() {del_deriv() ; return jj;} ;
///Sets the normalization factor \c F
Scalar& set_fff() {del_deriv() ; return fff;} ;
///Sets the normalization factor \c G
Scalar& set_ggg() {del_deriv() ; return ggg;} ;
/// Sets the boolean linked to geometrical shape of the horizon
bool set_issphere() {del_deriv() ; return issphere; };
/// Updates from the 3-slice data
void update_from_tslice(const Metric& gamij, const Sym_tensor& Kij) ;
// Computational functions
// -----------------------
public:
/// Computes the normal vector field to the 2-surface
// Vector compute_normal(const Metric& gamij) ;
/// Computes the square root of the determinant of \f$ q_{ab} \f$.
const Scalar& sqrt_q() const ;
/** Computes the area of the 2-surface.
* This is defined as \f[
* {\cal A} = \int h^2 \sqrt{\det q_{ab}} \sin \theta {\rm d}\theta
* {\rm d}\varphi \f] */
double area() const ;
/** Computes the angular momentum with respect to a divergence-free vector field
* tangent to the 2-surface.
* This is defined as \f[
* {\cal J} = \int h^2 L_i \phi^i \sqrt{\det q_{ab}} \sin \theta {\rm d}\theta
* {\rm d}\varphi \f]
* @param phi : the divergence-free vector field \f$ \phi \f$
*/
double angu_mom() const ;
/** Computes the mass as defined from the calculus of angular momentum,
* done with respect to a divergence free tangent vector field \f$ phi \f$.
* Spheroid has to be a real sphere (flag issphere true), of constant radius \f[R_{s} \f].
* defined as \f[ M = \frac{1}{2 R_{s}} \sqrt{R_{s}^{4} + 4{\cal J}^{2}} \f]
*/
double mass() const;
/** Computes the mass multipole of a given order for the spheroid,
* assumed to be spherical.
* WARNING: For technical reasons, only even orders are supported by the code.
*/
double multipole_mass(const int order) const;
/** Computes the angular multipole of a given order for the spheroid,
* assumed to be spherical. \f$ phi \f$ is a divergence free tangent vector field.
* WARNING:order has to be strictly higher than zero (no topological defects here...), and an odd number for technical reasons.
*/
double multipole_angu(const int order) const;
/// Computation of the refined Penrose parameter for axisymmetric spacetimes, and its difference wrt one.
double epsilon_A_minus_one() const;
/** Computation of the classical Penrose parameter, and its difference wrt one.
* To use in replacement of epsilon_A_minus_one when the computed spacetime is not axisymmetric.
*/
double epsilon_P_minus_one() const;
/// Computes the outgoing null expansion \f$ \theta_+ \f$.
const Scalar& theta_plus() const ;
/// Computes the ingoing null expansion \f$ \theta_- \f$.
const Scalar& theta_minus() const ;
/// Computes the shear of the 2-surface \f$ \sigma_{ab} \f$.
const Sym_tensor& shear () const ;
/// Computes the round covariant derivative on the spheroid
Tensor derive_cov2dflat(const Tensor& uu) const ;
///Computes the delta coefficients for covariant derivative
const Tensor& delta() const;
/// Computes the total covariant derivative on the spheroid
Tensor derive_cov2d(const Tensor& uu) const ;
// Outputs
// -------
public:
virtual void sauve(FILE *) const ; ///< Save in a file
/// Display
friend ostream& operator<<(ostream& , const Spheroid& ) ;
};
ostream& operator<<(ostream& , const Spheroid& ) ;
//------------------
// Class App_hor
//------------------
/**
* Class describing an apparent horizon. It is derived from the class \c Spheroid,
* with the property that the outgoing null expansion \f$ \theta_+ = 0\f$.
*/
class App_hor : public Spheroid {
// Constructors - Destructor
// -------------------------
public:
App_hor(const Mg3d& grid_angu, double radius) ; ///< Standard constructor
/** Constructor of an apparent horizon embedded in a 3-slice (\c Time_slice )
* of 3+1 formalism.
* This is done from the \c Time_slice data.
* @param h_in : the location of the surface \e r = h_in
* @param gamij : the 3-metric on the 3-slice
* @param Kij : the extrinsic curvature of the 3-slice
* (covariant representation)
*/
App_hor(const Scalar& h_in, const Metric& gamij, const Sym_tensor& Kij) ;
App_hor(const App_hor& ) ; ///< Copy constructor
/// Constructor from a file (see \c sauve(FILE*) )
App_hor(FILE* ) ;
virtual ~App_hor() ; ///< Destructor
// Mutators / assignment
// ---------------------
public:
/// Assignment to another App_hor
void operator=(const App_hor&) ;
bool check_expansion(double thres = 1.e-7) const ;
/// Lie derivative of shear tensor with respect to the evolution vector field.
const Sym_tensor& lie_derive_shear(const Scalar& bb, const Scalar& lapse) ;
/** Lie derivative of the null outgoing expansion rate with respect to the
* evolution vector field.
*/
const Sym_tensor& lie_derive_theta_plus(const Scalar& bb, const Scalar& lapse);
/** Lie derivative of the null ingoing expansion rate with respect to the
* evolution vector field.
*/
const Sym_tensor& lie_derive_theta_minus(const Scalar& bb, const Scalar& lapse);
/// Lie derivative of 2-metric with respect to the evolution vector field.
const Sym_tensor& lie_derive_q_ab(const Scalar& bb, const Scalar& lapse) ;
/** non-affinity (or surface gravity) with respect to the outgoing null vector
* field
*/
const Scalar& l_non_affinity(const Scalar& bb, const Scalar& lapse) ;
} ;
}
#endif
|